Home / 853,505,712.20-1,281,215,162.10-660,273,764.60

Finding the Fourth Proportional to 853,505,712.20, 1,281,215,162.10 and 660,273,764.60

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Solution

The fourth proportional to 853,505,712.20, 1,281,215,162.10 and 660,273,764.60 is: 991,150,669.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,505,712.20 : 1,281,215,162.10 = 660,273,764.60 : x
  2. Step 2: Convert to fraction form
    853,505,712.20/1,281,215,162.10 = 660,273,764.60/x
  3. Step 3: Cross multiply
    853,505,712.20x = 1,281,215,162.10 × 660,273,764.60
  4. Step 4: Simplify right side
    853,505,712.20x = 845,952,758,342,366,208
  5. Step 5: Solve for x
    x = 845,952,758,342,366,208/853,505,712.20
  6. Step 6: Final answer
    x = 991,150,669.82

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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.