Home / 8,189,679.20-12,288,205.20-3,928,200.80

Finding the Fourth Proportional to 8,189,679.20, 12,288,205.20 and 3,928,200.80

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Solution

The fourth proportional to 8,189,679.20, 12,288,205.20 and 3,928,200.80 is: 5,894,069.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,189,679.20 : 12,288,205.20 = 3,928,200.80 : x
  2. Step 2: Convert to fraction form
    8,189,679.20/12,288,205.20 = 3,928,200.80/x
  3. Step 3: Cross multiply
    8,189,679.20x = 12,288,205.20 × 3,928,200.80
  4. Step 4: Simplify right side
    8,189,679.20x = 48,270,537,497,204.16
  5. Step 5: Solve for x
    x = 48,270,537,497,204.16/8,189,679.20
  6. Step 6: Final answer
    x = 5,894,069.39

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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.