Home / 521,575.20-781,925.40-272,257.20

Finding the Fourth Proportional to 521,575.20, 781,925.40 and 272,257.20

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Solution

The fourth proportional to 521,575.20, 781,925.40 and 272,257.20 is: 408,157.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,575.20 : 781,925.40 = 272,257.20 : x
  2. Step 2: Convert to fraction form
    521,575.20/781,925.40 = 272,257.20/x
  3. Step 3: Cross multiply
    521,575.20x = 781,925.40 × 272,257.20
  4. Step 4: Simplify right side
    521,575.20x = 212,884,820,012.88
  5. Step 5: Solve for x
    x = 212,884,820,012.88/521,575.20
  6. Step 6: Final answer
    x = 408,157.48

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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.