Home / 5,278,818.20-7,915,019.70-2,080,257.80

Finding the Fourth Proportional to 5,278,818.20, 7,915,019.70 and 2,080,257.80

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Solution

The fourth proportional to 5,278,818.20, 7,915,019.70 and 2,080,257.80 is: 3,119,122.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278,818.20 : 7,915,019.70 = 2,080,257.80 : x
  2. Step 2: Convert to fraction form
    5,278,818.20/7,915,019.70 = 2,080,257.80/x
  3. Step 3: Cross multiply
    5,278,818.20x = 7,915,019.70 × 2,080,257.80
  4. Step 4: Simplify right side
    5,278,818.20x = 16,465,281,468,078.66
  5. Step 5: Solve for x
    x = 16,465,281,468,078.66/5,278,818.20
  6. Step 6: Final answer
    x = 3,119,122.66

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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.