Home / 812,179.71-1,120,794.57-449,595.90

Finding the Fourth Proportional to 812,179.71, 1,120,794.57 and 449,595.90

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Solution

The fourth proportional to 812,179.71, 1,120,794.57 and 449,595.90 is: 620,434.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,179.71 : 1,120,794.57 = 449,595.90 : x
  2. Step 2: Convert to fraction form
    812,179.71/1,120,794.57 = 449,595.90/x
  3. Step 3: Cross multiply
    812,179.71x = 1,120,794.57 × 449,595.90
  4. Step 4: Simplify right side
    812,179.71x = 503,904,643,414.26
  5. Step 5: Solve for x
    x = 503,904,643,414.26/812,179.71
  6. Step 6: Final answer
    x = 620,434.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.