Home / 613,829.12-847,126.71-372,121.88

Finding the Fourth Proportional to 613,829.12, 847,126.71 and 372,121.88

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Solution

The fourth proportional to 613,829.12, 847,126.71 and 372,121.88 is: 513,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,829.12 : 847,126.71 = 372,121.88 : x
  2. Step 2: Convert to fraction form
    613,829.12/847,126.71 = 372,121.88/x
  3. Step 3: Cross multiply
    613,829.12x = 847,126.71 × 372,121.88
  4. Step 4: Simplify right side
    613,829.12x = 315,234,379,687.78
  5. Step 5: Solve for x
    x = 315,234,379,687.78/613,829.12
  6. Step 6: Final answer
    x = 513,553.97

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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.