Home / 3,120,460.80-4,680,691.20-2,642,163.90

Finding the Fourth Proportional to 3,120,460.80, 4,680,691.20 and 2,642,163.90

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Solution

The fourth proportional to 3,120,460.80, 4,680,691.20 and 2,642,163.90 is: 3,963,245.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,460.80 : 4,680,691.20 = 2,642,163.90 : x
  2. Step 2: Convert to fraction form
    3,120,460.80/4,680,691.20 = 2,642,163.90/x
  3. Step 3: Cross multiply
    3,120,460.80x = 4,680,691.20 × 2,642,163.90
  4. Step 4: Simplify right side
    3,120,460.80x = 12,367,153,315,687.68
  5. Step 5: Solve for x
    x = 12,367,153,315,687.68/3,120,460.80
  6. Step 6: Final answer
    x = 3,963,245.85

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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.