Home / 1,131,500,018.32-1,561,385,613.68-636,367,067.44

Finding the Fourth Proportional to 1,131,500,018.32, 1,561,385,613.68 and 636,367,067.44

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Solution

The fourth proportional to 1,131,500,018.32, 1,561,385,613.68 and 636,367,067.44 is: 878,139,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,500,018.32 : 1,561,385,613.68 = 636,367,067.44 : x
  2. Step 2: Convert to fraction form
    1,131,500,018.32/1,561,385,613.68 = 636,367,067.44/x
  3. Step 3: Cross multiply
    1,131,500,018.32x = 1,561,385,613.68 × 636,367,067.44
  4. Step 4: Simplify right side
    1,131,500,018.32x = 993,614,384,120,546,432
  5. Step 5: Solve for x
    x = 993,614,384,120,546,432/1,131,500,018.32
  6. Step 6: Final answer
    x = 878,139,079.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.