Home / 1,138,515,272.25-1,707,810,711.11-391,523,715.87

Finding the Fourth Proportional to 1,138,515,272.25, 1,707,810,711.11 and 391,523,715.87

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Solution

The fourth proportional to 1,138,515,272.25, 1,707,810,711.11 and 391,523,715.87 is: 587,298,573.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,515,272.25 : 1,707,810,711.11 = 391,523,715.87 : x
  2. Step 2: Convert to fraction form
    1,138,515,272.25/1,707,810,711.11 = 391,523,715.87/x
  3. Step 3: Cross multiply
    1,138,515,272.25x = 1,707,810,711.11 × 391,523,715.87
  4. Step 4: Simplify right side
    1,138,515,272.25x = 668,648,395,614,416,640
  5. Step 5: Solve for x
    x = 668,648,395,614,416,640/1,138,515,272.25
  6. Step 6: Final answer
    x = 587,298,573.78

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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.