Home / 791,448,128.87-1,187,172,230.22-542,207,614.28

Finding the Fourth Proportional to 791,448,128.87, 1,187,172,230.22 and 542,207,614.28

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Solution

The fourth proportional to 791,448,128.87, 1,187,172,230.22 and 542,207,614.28 is: 813,311,446.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,448,128.87 : 1,187,172,230.22 = 542,207,614.28 : x
  2. Step 2: Convert to fraction form
    791,448,128.87/1,187,172,230.22 = 542,207,614.28/x
  3. Step 3: Cross multiply
    791,448,128.87x = 1,187,172,230.22 × 542,207,614.28
  4. Step 4: Simplify right side
    791,448,128.87x = 643,693,822,681,117,184
  5. Step 5: Solve for x
    x = 643,693,822,681,117,184/791,448,128.87
  6. Step 6: Final answer
    x = 813,311,446.71

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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.