Home / 521,590.20-781,947.90-272,272.20

Finding the Fourth Proportional to 521,590.20, 781,947.90 and 272,272.20

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Solution

The fourth proportional to 521,590.20, 781,947.90 and 272,272.20 is: 408,179.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,590.20 : 781,947.90 = 272,272.20 : x
  2. Step 2: Convert to fraction form
    521,590.20/781,947.90 = 272,272.20/x
  3. Step 3: Cross multiply
    521,590.20x = 781,947.90 × 272,272.20
  4. Step 4: Simplify right side
    521,590.20x = 212,902,675,018.38
  5. Step 5: Solve for x
    x = 212,902,675,018.38/521,590.20
  6. Step 6: Final answer
    x = 408,179.98

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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.