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Finding the Third Proportional to 392,502 and 622,530

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Solution

The third proportional to 392,502 and 622,530 is: 987,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,502 : 622,530 = 622,530 : x
  2. Step 2: Convert to fraction form
    392,502/622,530 = 622,530/x
  3. Step 3: Cross multiply
    392,502x = 622,530 × 622,530
  4. Step 4: Simplify right side
    392,502x = 387,543,600,900
  5. Step 5: Solve for x
    x = 387,543,600,900/392,502
  6. Step 6: Final answer
    x = 987,367.20

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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.