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Finding the Fourth Proportional to 677,930.92, 935,542.09 and 372,012.41

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Solution

The fourth proportional to 677,930.92, 935,542.09 and 372,012.41 is: 513,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,930.92 : 935,542.09 = 372,012.41 : x
  2. Step 2: Convert to fraction form
    677,930.92/935,542.09 = 372,012.41/x
  3. Step 3: Cross multiply
    677,930.92x = 935,542.09 × 372,012.41
  4. Step 4: Simplify right side
    677,930.92x = 348,033,267,557.34
  5. Step 5: Solve for x
    x = 348,033,267,557.34/677,930.92
  6. Step 6: Final answer
    x = 513,375.71

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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.