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Finding the Fourth Proportional to 624,339.81, 861,496.25 and 379,197

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Solution

The fourth proportional to 624,339.81, 861,496.25 and 379,197 is: 523,235.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,339.81 : 861,496.25 = 379,197 : x
  2. Step 2: Convert to fraction form
    624,339.81/861,496.25 = 379,197/x
  3. Step 3: Cross multiply
    624,339.81x = 861,496.25 × 379,197
  4. Step 4: Simplify right side
    624,339.81x = 326,676,791,615.27
  5. Step 5: Solve for x
    x = 326,676,791,615.27/624,339.81
  6. Step 6: Final answer
    x = 523,235.56

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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.