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Finding the Third Proportional to 392,670 and 622,792

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Solution

The third proportional to 392,670 and 622,792 is: 987,775.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,670 : 622,792 = 622,792 : x
  2. Step 2: Convert to fraction form
    392,670/622,792 = 622,792/x
  3. Step 3: Cross multiply
    392,670x = 622,792 × 622,792
  4. Step 4: Simplify right side
    392,670x = 387,869,875,264
  5. Step 5: Solve for x
    x = 387,869,875,264/392,670
  6. Step 6: Final answer
    x = 987,775.68

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