Convert pound / gallon to parts per million

Learn how to convert 1 pound / gallon to parts per million step by step.

Calculation Breakdown

Set up the equation

1.0 (\frac{p o u n d}{g a l l o n}) = x (p a r t s p e r m i l l i o n)

Define the base values of the selected units in relation to the SI unit

(\frac{k i l o g r a m}{c u b i c m e t e r})

Left side: 1.0 (\frac{p o u n d}{g a l l o n}) = \frac{0.45359237}{3.785411784 \times 10^{- 3}} (\frac{k i l o g r a m}{c u b i c m e t e r}) = \frac{0.45359237}{3.785411784 \times 10^{- 3}} (\frac{k g}{m^{3}})

Right side: 1.0 (p a r t s p e r m i l l i o n) = 10^{- 3} (\frac{k i l o g r a m}{c u b i c m e t e r}) = 10^{- 3} (\frac{k g}{m^{3}})

Insert known values into the conversion equation to determine

x

1.0 (\frac{p o u n d}{g a l l o n}) = x (p a r t s p e r m i l l i o n)

Insert known values =>

1.0 \times \frac{0.45359237}{3.785411784 \times 10^{- 3}} \times (\frac{k i l o g r a m}{c u b i c m e t e r}) = x \times 10^{- 3} \times (\frac{k i l o g r a m}{c u b i c m e t e r})

Or

1.0 \cdot \frac{0.45359237}{3.785411784 \times 10^{- 3}} \cdot (\frac{k g}{m^{3}}) = x \cdot 10^{- 3} \cdot (\frac{k g}{m^{3}})

Cancel SI units

1.0 \times \frac{0.45359237}{3.785411784 \times 10^{- 3}} \cdot (\frac{k g}{m^{3}}) = x \times 10^{- 3} \times (\frac{k g}{m^{3}})

Conversion Equation

\frac{0.45359237}{3.785411784 \times 10^{- 3}} = x \times 10^{- 3}

Switch sides

x \times 10^{- 3} = \frac{0.45359237}{3.785411784 \times 10^{- 3}}

Isolate

x

Multiply both sides by

(\frac{1.0}{10^{- 3}})

x \times 10^{- 3} \times \frac{1.0}{10^{- 3}} = \frac{0.45359237}{3.785411784 \times 10^{- 3}} \times \frac{1.0}{10^{- 3}}

Cancel

x \times 10^{- 3} \times \frac{1.0}{10^{- 3}} = \frac{0.45359237 \times 1.0}{3.785411784 \times 10^{- 3} \times 10^{- 3}}

Simplify

x = \frac{0.45359237}{3.785411784 \times 10^{- 3} \times 10^{- 3}}

Rewrite equation

\frac{1.0}{10^{- 3}} can be rewritten to 10^{3}

\frac{1.0}{10^{- 3}} can be rewritten to 10^{3}

Rewrite

x = \frac{10^{3} \times 10^{3} \times 0.45359237}{3.785411784}

Simplify

x = \frac{10^{6} \times 0.45359237}{3.785411784}

Solve

x

x \approx 119826.42732 \approx 1.1983 \times 10^{5}

Conversion Equation

1.0 (\frac{p o u n d}{g a l l o n}) \approx 1.1983 \times 10^{5} (p a r t s p e r m i l l i o n)

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