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Finding the Fourth Proportional to 627,960.20, 866,558.91 and 356,046.47

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Solution

The fourth proportional to 627,960.20, 866,558.91 and 356,046.47 is: 491,329.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,960.20 : 866,558.91 = 356,046.47 : x
  2. Step 2: Convert to fraction form
    627,960.20/866,558.91 = 356,046.47/x
  3. Step 3: Cross multiply
    627,960.20x = 866,558.91 × 356,046.47
  4. Step 4: Simplify right side
    627,960.20x = 308,535,240,952.55
  5. Step 5: Solve for x
    x = 308,535,240,952.55/627,960.20
  6. Step 6: Final answer
    x = 491,329.29

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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.