Home / 1,145,447.70-1,718,171.55-639,489.30

Finding the Fourth Proportional to 1,145,447.70, 1,718,171.55 and 639,489.30

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Solution

The fourth proportional to 1,145,447.70, 1,718,171.55 and 639,489.30 is: 959,233.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,447.70 : 1,718,171.55 = 639,489.30 : x
  2. Step 2: Convert to fraction form
    1,145,447.70/1,718,171.55 = 639,489.30/x
  3. Step 3: Cross multiply
    1,145,447.70x = 1,718,171.55 × 639,489.30
  4. Step 4: Simplify right side
    1,145,447.70x = 1,098,752,321,789.42
  5. Step 5: Solve for x
    x = 1,098,752,321,789.42/1,145,447.70
  6. Step 6: Final answer
    x = 959,233.95

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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.