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Finding the Fourth Proportional to 627,765.12, 866,505.60 and 426,677.76

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Solution

The fourth proportional to 627,765.12, 866,505.60 and 426,677.76 is: 588,944.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,765.12 : 866,505.60 = 426,677.76 : x
  2. Step 2: Convert to fraction form
    627,765.12/866,505.60 = 426,677.76/x
  3. Step 3: Cross multiply
    627,765.12x = 866,505.60 × 426,677.76
  4. Step 4: Simplify right side
    627,765.12x = 369,718,668,435.46
  5. Step 5: Solve for x
    x = 369,718,668,435.46/627,765.12
  6. Step 6: Final answer
    x = 588,944.27

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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.