Home / 521,498.20-782,247.30-205,792.60

Finding the Fourth Proportional to 521,498.20, 782,247.30 and 205,792.60

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Solution

The fourth proportional to 521,498.20, 782,247.30 and 205,792.60 is: 308,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,498.20 : 782,247.30 = 205,792.60 : x
  2. Step 2: Convert to fraction form
    521,498.20/782,247.30 = 205,792.60/x
  3. Step 3: Cross multiply
    521,498.20x = 782,247.30 × 205,792.60
  4. Step 4: Simplify right side
    521,498.20x = 160,980,705,709.98
  5. Step 5: Solve for x
    x = 160,980,705,709.98/521,498.20
  6. Step 6: Final answer
    x = 308,688.90

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Similar ratio
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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.