Home / 861,715,114.20-1,292,754,265.20-279,403,959.60

Finding the Fourth Proportional to 861,715,114.20, 1,292,754,265.20 and 279,403,959.60

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Solution

The fourth proportional to 861,715,114.20, 1,292,754,265.20 and 279,403,959.60 is: 419,164,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,715,114.20 : 1,292,754,265.20 = 279,403,959.60 : x
  2. Step 2: Convert to fraction form
    861,715,114.20/1,292,754,265.20 = 279,403,959.60/x
  3. Step 3: Cross multiply
    861,715,114.20x = 1,292,754,265.20 × 279,403,959.60
  4. Step 4: Simplify right side
    861,715,114.20x = 361,200,660,486,668,544
  5. Step 5: Solve for x
    x = 361,200,660,486,668,544/861,715,114.20
  6. Step 6: Final answer
    x = 419,164,819.71

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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.