Home / 1,217,286.70-1,679,553.84-787,049.13

Finding the Fourth Proportional to 1,217,286.70, 1,679,553.84 and 787,049.13

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Solution

The fourth proportional to 1,217,286.70, 1,679,553.84 and 787,049.13 is: 1,085,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,286.70 : 1,679,553.84 = 787,049.13 : x
  2. Step 2: Convert to fraction form
    1,217,286.70/1,679,553.84 = 787,049.13/x
  3. Step 3: Cross multiply
    1,217,286.70x = 1,679,553.84 × 787,049.13
  4. Step 4: Simplify right side
    1,217,286.70x = 1,321,891,388,560.16
  5. Step 5: Solve for x
    x = 1,321,891,388,560.16/1,217,286.70
  6. Step 6: Final answer
    x = 1,085,932.66

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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.