Home / 521,418.15-781,930.38-240,738.57

Finding the Fourth Proportional to 521,418.15, 781,930.38 and 240,738.57

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Solution

The fourth proportional to 521,418.15, 781,930.38 and 240,738.57 is: 361,016.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,418.15 : 781,930.38 = 240,738.57 : x
  2. Step 2: Convert to fraction form
    521,418.15/781,930.38 = 240,738.57/x
  3. Step 3: Cross multiply
    521,418.15x = 781,930.38 × 240,738.57
  4. Step 4: Simplify right side
    521,418.15x = 188,240,801,520.76
  5. Step 5: Solve for x
    x = 188,240,801,520.76/521,418.15
  6. Step 6: Final answer
    x = 361,016.97

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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.