Home / 811,865.97-1,120,347.26-449,305.11

Finding the Fourth Proportional to 811,865.97, 1,120,347.26 and 449,305.11

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Solution

The fourth proportional to 811,865.97, 1,120,347.26 and 449,305.11 is: 620,025.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,865.97 : 1,120,347.26 = 449,305.11 : x
  2. Step 2: Convert to fraction form
    811,865.97/1,120,347.26 = 449,305.11/x
  3. Step 3: Cross multiply
    811,865.97x = 1,120,347.26 × 449,305.11
  4. Step 4: Simplify right side
    811,865.97x = 503,377,746,645.97
  5. Step 5: Solve for x
    x = 503,377,746,645.97/811,865.97
  6. Step 6: Final answer
    x = 620,025.68

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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.