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Finding the Fourth Proportional to 624,342.93, 861,500.56 and 379,200.12

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Solution

The fourth proportional to 624,342.93, 861,500.56 and 379,200.12 is: 523,239.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,342.93 : 861,500.56 = 379,200.12 : x
  2. Step 2: Convert to fraction form
    624,342.93/861,500.56 = 379,200.12/x
  3. Step 3: Cross multiply
    624,342.93x = 861,500.56 × 379,200.12
  4. Step 4: Simplify right side
    624,342.93x = 326,681,113,836.07
  5. Step 5: Solve for x
    x = 326,681,113,836.07/624,342.93
  6. Step 6: Final answer
    x = 523,239.87

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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.