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Finding the Third Proportional to 402,687 and 564,437

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Solution

The third proportional to 402,687 and 564,437 is: 791,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,687 : 564,437 = 564,437 : x
  2. Step 2: Convert to fraction form
    402,687/564,437 = 564,437/x
  3. Step 3: Cross multiply
    402,687x = 564,437 × 564,437
  4. Step 4: Simplify right side
    402,687x = 318,589,126,969
  5. Step 5: Solve for x
    x = 318,589,126,969/402,687
  6. Step 6: Final answer
    x = 791,158.21

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.