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Finding the Third Proportional to 423,414 and 658,449

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Solution

The third proportional to 423,414 and 658,449 is: 1,023,950.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,414 : 658,449 = 658,449 : x
  2. Step 2: Convert to fraction form
    423,414/658,449 = 658,449/x
  3. Step 3: Cross multiply
    423,414x = 658,449 × 658,449
  4. Step 4: Simplify right side
    423,414x = 433,555,085,601
  5. Step 5: Solve for x
    x = 433,555,085,601/423,414
  6. Step 6: Final answer
    x = 1,023,950.76

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.