Home / 521,622.20-781,995.90-272,304.20

Finding the Fourth Proportional to 521,622.20, 781,995.90 and 272,304.20

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Solution

The fourth proportional to 521,622.20, 781,995.90 and 272,304.20 is: 408,227.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,622.20 : 781,995.90 = 272,304.20 : x
  2. Step 2: Convert to fraction form
    521,622.20/781,995.90 = 272,304.20/x
  3. Step 3: Cross multiply
    521,622.20x = 781,995.90 × 272,304.20
  4. Step 4: Simplify right side
    521,622.20x = 212,940,767,952.78
  5. Step 5: Solve for x
    x = 212,940,767,952.78/521,622.20
  6. Step 6: Final answer
    x = 408,227.96

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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.