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Finding the Fourth Proportional to 543,145.20, 814,863.60 and 484,387.80

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Solution

The fourth proportional to 543,145.20, 814,863.60 and 484,387.80 is: 726,711.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,145.20 : 814,863.60 = 484,387.80 : x
  2. Step 2: Convert to fraction form
    543,145.20/814,863.60 = 484,387.80/x
  3. Step 3: Cross multiply
    543,145.20x = 814,863.60 × 484,387.80
  4. Step 4: Simplify right side
    543,145.20x = 394,709,986,504.08
  5. Step 5: Solve for x
    x = 394,709,986,504.08/543,145.20
  6. Step 6: Final answer
    x = 726,711.73

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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.