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Finding the Third Proportional to 639,552 and 923,970

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Solution

The third proportional to 639,552 and 923,970 is: 1,334,872.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,552 : 923,970 = 923,970 : x
  2. Step 2: Convert to fraction form
    639,552/923,970 = 923,970/x
  3. Step 3: Cross multiply
    639,552x = 923,970 × 923,970
  4. Step 4: Simplify right side
    639,552x = 853,720,560,900
  5. Step 5: Solve for x
    x = 853,720,560,900/639,552
  6. Step 6: Final answer
    x = 1,334,872.79

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.