Home / 6,121,753.60-9,172,132.80-3,990,740.80

Finding the Fourth Proportional to 6,121,753.60, 9,172,132.80 and 3,990,740.80

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Solution

The fourth proportional to 6,121,753.60, 9,172,132.80 and 3,990,740.80 is: 5,979,267.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121,753.60 : 9,172,132.80 = 3,990,740.80 : x
  2. Step 2: Convert to fraction form
    6,121,753.60/9,172,132.80 = 3,990,740.80/x
  3. Step 3: Cross multiply
    6,121,753.60x = 9,172,132.80 × 3,990,740.80
  4. Step 4: Simplify right side
    6,121,753.60x = 36,603,604,587,978.24
  5. Step 5: Solve for x
    x = 36,603,604,587,978.24/6,121,753.60
  6. Step 6: Final answer
    x = 5,979,267.87

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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.