Home / 1,331,150,515.20-1,992,899,397.60-814,589,863.20

Finding the Fourth Proportional to 1,331,150,515.20, 1,992,899,397.60 and 814,589,863.20

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Solution

The fourth proportional to 1,331,150,515.20, 1,992,899,397.60 and 814,589,863.20 is: 1,219,543,266.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,150,515.20 : 1,992,899,397.60 = 814,589,863.20 : x
  2. Step 2: Convert to fraction form
    1,331,150,515.20/1,992,899,397.60 = 814,589,863.20/x
  3. Step 3: Cross multiply
    1,331,150,515.20x = 1,992,899,397.60 × 814,589,863.20
  4. Step 4: Simplify right side
    1,331,150,515.20x = 1,623,395,647,662,346,496
  5. Step 5: Solve for x
    x = 1,623,395,647,662,346,496/1,331,150,515.20
  6. Step 6: Final answer
    x = 1,219,543,266.61

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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.