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Finding the Fourth Proportional to 547,291.20, 820,936.80 and 472,495.80

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Solution

The fourth proportional to 547,291.20, 820,936.80 and 472,495.80 is: 708,743.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,291.20 : 820,936.80 = 472,495.80 : x
  2. Step 2: Convert to fraction form
    547,291.20/820,936.80 = 472,495.80/x
  3. Step 3: Cross multiply
    547,291.20x = 820,936.80 × 472,495.80
  4. Step 4: Simplify right side
    547,291.20x = 387,889,190,065.44
  5. Step 5: Solve for x
    x = 387,889,190,065.44/547,291.20
  6. Step 6: Final answer
    x = 708,743.70

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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.