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Finding the Third Proportional to 392,516 and 622,552

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Solution

The third proportional to 392,516 and 622,552 is: 987,401.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,516 : 622,552 = 622,552 : x
  2. Step 2: Convert to fraction form
    392,516/622,552 = 622,552/x
  3. Step 3: Cross multiply
    392,516x = 622,552 × 622,552
  4. Step 4: Simplify right side
    392,516x = 387,570,992,704
  5. Step 5: Solve for x
    x = 387,570,992,704/392,516
  6. Step 6: Final answer
    x = 987,401.77

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.