Home / 3,990,869.10-5,979,414.60-1,856,575.80

Finding the Fourth Proportional to 3,990,869.10, 5,979,414.60 and 1,856,575.80

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Solution

The fourth proportional to 3,990,869.10, 5,979,414.60 and 1,856,575.80 is: 2,781,658.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,869.10 : 5,979,414.60 = 1,856,575.80 : x
  2. Step 2: Convert to fraction form
    3,990,869.10/5,979,414.60 = 1,856,575.80/x
  3. Step 3: Cross multiply
    3,990,869.10x = 5,979,414.60 × 1,856,575.80
  4. Step 4: Simplify right side
    3,990,869.10x = 11,101,236,444,526.68
  5. Step 5: Solve for x
    x = 11,101,236,444,526.68/3,990,869.10
  6. Step 6: Final answer
    x = 2,781,658.87

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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.