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Finding the Third Proportional to 431,583 and 653,372

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Solution

The third proportional to 431,583 and 653,372 is: 989,137.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,583 : 653,372 = 653,372 : x
  2. Step 2: Convert to fraction form
    431,583/653,372 = 653,372/x
  3. Step 3: Cross multiply
    431,583x = 653,372 × 653,372
  4. Step 4: Simplify right side
    431,583x = 426,894,970,384
  5. Step 5: Solve for x
    x = 426,894,970,384/431,583
  6. Step 6: Final answer
    x = 989,137.59

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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.