Home / 1,131,500,012.32-1,561,385,605.44-636,367,061.44

Finding the Fourth Proportional to 1,131,500,012.32, 1,561,385,605.44 and 636,367,061.44

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Solution

The fourth proportional to 1,131,500,012.32, 1,561,385,605.44 and 636,367,061.44 is: 878,139,070.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,500,012.32 : 1,561,385,605.44 = 636,367,061.44 : x
  2. Step 2: Convert to fraction form
    1,131,500,012.32/1,561,385,605.44 = 636,367,061.44/x
  3. Step 3: Cross multiply
    1,131,500,012.32x = 1,561,385,605.44 × 636,367,061.44
  4. Step 4: Simplify right side
    1,131,500,012.32x = 993,614,369,508,568,192
  5. Step 5: Solve for x
    x = 993,614,369,508,568,192/1,131,500,012.32
  6. Step 6: Final answer
    x = 878,139,070.87

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1.5x scale

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.