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Finding the Fourth Proportional to 521,399.52, 782,395.12 and 281,510.22

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Solution

The fourth proportional to 521,399.52, 782,395.12 and 281,510.22 is: 422,425.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,399.52 : 782,395.12 = 281,510.22 : x
  2. Step 2: Convert to fraction form
    521,399.52/782,395.12 = 281,510.22/x
  3. Step 3: Cross multiply
    521,399.52x = 782,395.12 × 281,510.22
  4. Step 4: Simplify right side
    521,399.52x = 220,252,222,358.13
  5. Step 5: Solve for x
    x = 220,252,222,358.13/521,399.52
  6. Step 6: Final answer
    x = 422,425.06

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1.5x scale

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.