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Finding the Fourth Proportional to 869,843.70, 1,304,765.55 and 617,901.30

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Solution

The fourth proportional to 869,843.70, 1,304,765.55 and 617,901.30 is: 926,851.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,843.70 : 1,304,765.55 = 617,901.30 : x
  2. Step 2: Convert to fraction form
    869,843.70/1,304,765.55 = 617,901.30/x
  3. Step 3: Cross multiply
    869,843.70x = 1,304,765.55 × 617,901.30
  4. Step 4: Simplify right side
    869,843.70x = 806,216,329,540.22
  5. Step 5: Solve for x
    x = 806,216,329,540.22/869,843.70
  6. Step 6: Final answer
    x = 926,851.95

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Similar ratio
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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.