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Finding the Fourth Proportional to 624,229.89, 861,344.89 and 379,087.17

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Solution

The fourth proportional to 624,229.89, 861,344.89 and 379,087.17 is: 523,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,229.89 : 861,344.89 = 379,087.17 : x
  2. Step 2: Convert to fraction form
    624,229.89/861,344.89 = 379,087.17/x
  3. Step 3: Cross multiply
    624,229.89x = 861,344.89 × 379,087.17
  4. Step 4: Simplify right side
    624,229.89x = 326,524,792,566.30
  5. Step 5: Solve for x
    x = 326,524,792,566.30/624,229.89
  6. Step 6: Final answer
    x = 523,084.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.