Home / 811,857.57-1,120,335.84-449,296.71

Finding the Fourth Proportional to 811,857.57, 1,120,335.84 and 449,296.71

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Solution

The fourth proportional to 811,857.57, 1,120,335.84 and 449,296.71 is: 620,014.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,857.57 : 1,120,335.84 = 449,296.71 : x
  2. Step 2: Convert to fraction form
    811,857.57/1,120,335.84 = 449,296.71/x
  3. Step 3: Cross multiply
    811,857.57x = 1,120,335.84 × 449,296.71
  4. Step 4: Simplify right side
    811,857.57x = 503,363,207,007.09
  5. Step 5: Solve for x
    x = 503,363,207,007.09/811,857.57
  6. Step 6: Final answer
    x = 620,014.18

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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.