Home / 521,540.20-782,310.30-205,834.60

Finding the Fourth Proportional to 521,540.20, 782,310.30 and 205,834.60

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Solution

The fourth proportional to 521,540.20, 782,310.30 and 205,834.60 is: 308,751.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,540.20 : 782,310.30 = 205,834.60 : x
  2. Step 2: Convert to fraction form
    521,540.20/782,310.30 = 205,834.60/x
  3. Step 3: Cross multiply
    521,540.20x = 782,310.30 × 205,834.60
  4. Step 4: Simplify right side
    521,540.20x = 161,026,527,676.38
  5. Step 5: Solve for x
    x = 161,026,527,676.38/521,540.20
  6. Step 6: Final answer
    x = 308,751.90

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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.