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Finding the Fourth Proportional to 547,793.20, 821,689.80 and 454,481.20

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Solution

The fourth proportional to 547,793.20, 821,689.80 and 454,481.20 is: 681,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,793.20 : 821,689.80 = 454,481.20 : x
  2. Step 2: Convert to fraction form
    547,793.20/821,689.80 = 454,481.20/x
  3. Step 3: Cross multiply
    547,793.20x = 821,689.80 × 454,481.20
  4. Step 4: Simplify right side
    547,793.20x = 373,442,566,331.76
  5. Step 5: Solve for x
    x = 373,442,566,331.76/547,793.20
  6. Step 6: Final answer
    x = 681,721.80

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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.