Finding the Fourth Proportional to 721,797,107.01, 996,053,335.61 and 391,765,160.13
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Solution
The fourth proportional to 721,797,107.01, 996,053,335.61 and 391,765,160.13 is: 540,621,444.35
Step by Step Solution
- Step 1: Write the proportion equation
721,797,107.01 : 996,053,335.61 = 391,765,160.13 : x - Step 2: Convert to fraction form
721,797,107.01/996,053,335.61 = 391,765,160.13/x - Step 3: Cross multiply
721,797,107.01x = 996,053,335.61 × 391,765,160.13 - Step 4: Simplify right side
721,797,107.01x = 390,218,994,521,313,472 - Step 5: Solve for x
x = 390,218,994,521,313,472/721,797,107.01 - Step 6: Final answer
x = 540,621,444.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.