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Finding the Fourth Proportional to 654,299.20, 982,024.80 and 387,726.40

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Solution

The fourth proportional to 654,299.20, 982,024.80 and 387,726.40 is: 581,930.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,299.20 : 982,024.80 = 387,726.40 : x
  2. Step 2: Convert to fraction form
    654,299.20/982,024.80 = 387,726.40/x
  3. Step 3: Cross multiply
    654,299.20x = 982,024.80 × 387,726.40
  4. Step 4: Simplify right side
    654,299.20x = 380,756,940,414.72
  5. Step 5: Solve for x
    x = 380,756,940,414.72/654,299.20
  6. Step 6: Final answer
    x = 581,930.93

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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.