Home / 861,709,433.76-1,292,745,739.68-279,398,272.32

Finding the Fourth Proportional to 861,709,433.76, 1,292,745,739.68 and 279,398,272.32

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Solution

The fourth proportional to 861,709,433.76, 1,292,745,739.68 and 279,398,272.32 is: 419,156,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,709,433.76 : 1,292,745,739.68 = 279,398,272.32 : x
  2. Step 2: Convert to fraction form
    861,709,433.76/1,292,745,739.68 = 279,398,272.32/x
  3. Step 3: Cross multiply
    861,709,433.76x = 1,292,745,739.68 × 279,398,272.32
  4. Step 4: Simplify right side
    861,709,433.76x = 361,190,926,215,632,448
  5. Step 5: Solve for x
    x = 361,190,926,215,632,448/861,709,433.76
  6. Step 6: Final answer
    x = 419,156,286.41

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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.