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Finding the Fourth Proportional to 624,339.30, 861,495.55 and 379,196.49

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Solution

The fourth proportional to 624,339.30, 861,495.55 and 379,196.49 is: 523,234.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,339.30 : 861,495.55 = 379,196.49 : x
  2. Step 2: Convert to fraction form
    624,339.30/861,495.55 = 379,196.49/x
  3. Step 3: Cross multiply
    624,339.30x = 861,495.55 × 379,196.49
  4. Step 4: Simplify right side
    624,339.30x = 326,676,088,710.62
  5. Step 5: Solve for x
    x = 326,676,088,710.62/624,339.30
  6. Step 6: Final answer
    x = 523,234.86

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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.