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Finding the Third Proportional to 397,687 and 602,313

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Solution

The third proportional to 397,687 and 602,313 is: 912,227.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,687 : 602,313 = 602,313 : x
  2. Step 2: Convert to fraction form
    397,687/602,313 = 602,313/x
  3. Step 3: Cross multiply
    397,687x = 602,313 × 602,313
  4. Step 4: Simplify right side
    397,687x = 362,780,949,969
  5. Step 5: Solve for x
    x = 362,780,949,969/397,687
  6. Step 6: Final answer
    x = 912,227.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.