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Finding the Fourth Proportional to 624,229.76, 861,344.72 and 379,087.04

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Solution

The fourth proportional to 624,229.76, 861,344.72 and 379,087.04 is: 523,084.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,229.76 : 861,344.72 = 379,087.04 : x
  2. Step 2: Convert to fraction form
    624,229.76/861,344.72 = 379,087.04/x
  3. Step 3: Cross multiply
    624,229.76x = 861,344.72 × 379,087.04
  4. Step 4: Simplify right side
    624,229.76x = 326,524,618,428.99
  5. Step 5: Solve for x
    x = 326,524,618,428.99/624,229.76
  6. Step 6: Final answer
    x = 523,084.03

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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.