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Finding the Fourth Proportional to 627,954.40, 943,834.72 and 415,447.20

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Solution

The fourth proportional to 627,954.40, 943,834.72 and 415,447.20 is: 624,429.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,954.40 : 943,834.72 = 415,447.20 : x
  2. Step 2: Convert to fraction form
    627,954.40/943,834.72 = 415,447.20/x
  3. Step 3: Cross multiply
    627,954.40x = 943,834.72 × 415,447.20
  4. Step 4: Simplify right side
    627,954.40x = 392,113,491,686.78
  5. Step 5: Solve for x
    x = 392,113,491,686.78/627,954.40
  6. Step 6: Final answer
    x = 624,429.88

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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.