Home / 678,687.57-1,016,481.02-323,951.31

Finding the Fourth Proportional to 678,687.57, 1,016,481.02 and 323,951.31

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Solution

The fourth proportional to 678,687.57, 1,016,481.02 and 323,951.31 is: 485,186.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,687.57 : 1,016,481.02 = 323,951.31 : x
  2. Step 2: Convert to fraction form
    678,687.57/1,016,481.02 = 323,951.31/x
  3. Step 3: Cross multiply
    678,687.57x = 1,016,481.02 × 323,951.31
  4. Step 4: Simplify right side
    678,687.57x = 329,290,356,399.38
  5. Step 5: Solve for x
    x = 329,290,356,399.38/678,687.57
  6. Step 6: Final answer
    x = 485,186.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.