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Finding the Fourth Proportional to 547,270.20, 820,905.30 and 472,474.80

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Solution

The fourth proportional to 547,270.20, 820,905.30 and 472,474.80 is: 708,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,270.20 : 820,905.30 = 472,474.80 : x
  2. Step 2: Convert to fraction form
    547,270.20/820,905.30 = 472,474.80/x
  3. Step 3: Cross multiply
    547,270.20x = 820,905.30 × 472,474.80
  4. Step 4: Simplify right side
    547,270.20x = 387,857,067,436.44
  5. Step 5: Solve for x
    x = 387,857,067,436.44/547,270.20
  6. Step 6: Final answer
    x = 708,712.20

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Similar ratio
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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.