Home / 521,455,221.60-782,780,029.20-306,165,775.20

Finding the Fourth Proportional to 521,455,221.60, 782,780,029.20 and 306,165,775.20

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Solution

The fourth proportional to 521,455,221.60, 782,780,029.20 and 306,165,775.20 is: 459,599,299.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,455,221.60 : 782,780,029.20 = 306,165,775.20 : x
  2. Step 2: Convert to fraction form
    521,455,221.60/782,780,029.20 = 306,165,775.20/x
  3. Step 3: Cross multiply
    521,455,221.60x = 782,780,029.20 × 306,165,775.20
  4. Step 4: Simplify right side
    521,455,221.60x = 239,660,454,451,096,640
  5. Step 5: Solve for x
    x = 239,660,454,451,096,640/521,455,221.60
  6. Step 6: Final answer
    x = 459,599,299.28

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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.