Home / 853,505,748.20-1,281,215,216.10-660,273,800.60

Finding the Fourth Proportional to 853,505,748.20, 1,281,215,216.10 and 660,273,800.60

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Solution

The fourth proportional to 853,505,748.20, 1,281,215,216.10 and 660,273,800.60 is: 991,150,723.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,505,748.20 : 1,281,215,216.10 = 660,273,800.60 : x
  2. Step 2: Convert to fraction form
    853,505,748.20/1,281,215,216.10 = 660,273,800.60/x
  3. Step 3: Cross multiply
    853,505,748.20x = 1,281,215,216.10 × 660,273,800.60
  4. Step 4: Simplify right side
    853,505,748.20x = 845,952,840,120,897,280
  5. Step 5: Solve for x
    x = 845,952,840,120,897,280/853,505,748.20
  6. Step 6: Final answer
    x = 991,150,723.83

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1.5x scale

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.