Home / 1,121,965.72-1,682,948.55-280,517.47

Finding the Fourth Proportional to 1,121,965.72, 1,682,948.55 and 280,517.47

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Solution

The fourth proportional to 1,121,965.72, 1,682,948.55 and 280,517.47 is: 420,776.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,965.72 : 1,682,948.55 = 280,517.47 : x
  2. Step 2: Convert to fraction form
    1,121,965.72/1,682,948.55 = 280,517.47/x
  3. Step 3: Cross multiply
    1,121,965.72x = 1,682,948.55 × 280,517.47
  4. Step 4: Simplify right side
    1,121,965.72x = 472,096,469,386.17
  5. Step 5: Solve for x
    x = 472,096,469,386.17/1,121,965.72
  6. Step 6: Final answer
    x = 420,776.20

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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.