Home / 791,448,128.61-1,187,172,229.83-542,207,614.02

Finding the Fourth Proportional to 791,448,128.61, 1,187,172,229.83 and 542,207,614.02

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Solution

The fourth proportional to 791,448,128.61, 1,187,172,229.83 and 542,207,614.02 is: 813,311,446.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,448,128.61 : 1,187,172,229.83 = 542,207,614.02 : x
  2. Step 2: Convert to fraction form
    791,448,128.61/1,187,172,229.83 = 542,207,614.02/x
  3. Step 3: Cross multiply
    791,448,128.61x = 1,187,172,229.83 × 542,207,614.02
  4. Step 4: Simplify right side
    791,448,128.61x = 643,693,822,171,815,808
  5. Step 5: Solve for x
    x = 643,693,822,171,815,808/791,448,128.61
  6. Step 6: Final answer
    x = 813,311,446.32

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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.