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Finding the Fourth Proportional to 627,960.42, 866,559.21 and 356,046.69

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Solution

The fourth proportional to 627,960.42, 866,559.21 and 356,046.69 is: 491,329.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,960.42 : 866,559.21 = 356,046.69 : x
  2. Step 2: Convert to fraction form
    627,960.42/866,559.21 = 356,046.69/x
  3. Step 3: Cross multiply
    627,960.42x = 866,559.21 × 356,046.69
  4. Step 4: Simplify right side
    627,960.42x = 308,535,538,409.52
  5. Step 5: Solve for x
    x = 308,535,538,409.52/627,960.42
  6. Step 6: Final answer
    x = 491,329.59

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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.