Home / 2,187,321.72-3,280,962.90-691,414.20

Finding the Fourth Proportional to 2,187,321.72, 3,280,962.90 and 691,414.20

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Solution

The fourth proportional to 2,187,321.72, 3,280,962.90 and 691,414.20 is: 1,037,115.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,321.72 : 3,280,962.90 = 691,414.20 : x
  2. Step 2: Convert to fraction form
    2,187,321.72/3,280,962.90 = 691,414.20/x
  3. Step 3: Cross multiply
    2,187,321.72x = 3,280,962.90 × 691,414.20
  4. Step 4: Simplify right side
    2,187,321.72x = 2,268,504,338,733.18
  5. Step 5: Solve for x
    x = 2,268,504,338,733.18/2,187,321.72
  6. Step 6: Final answer
    x = 1,037,115.08

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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.