Ratio & Proportion Solver

Solve for the missing term in the proportion equation A:B = C:D.

Inputs

Solve For

Value A

01,00,00,000

Value B

01,00,00,000

Value C

01,00,00,000

Value D

01,00,00,000

Calculation Results

Calculated Value

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Formula & Mathematical Explanation

\displaystyle \frac{A}{B} = \frac{C}{D} \implies A \cdot D = B \cdot C

In a proportion, the product of the extremes (A and D) equals the product of the means (B and C). If any three terms are known, the fourth can be calculated.