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Finding the Fourth Proportional to 667,797.80, 1,002,025.57 and 312,750.50

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Solution

The fourth proportional to 667,797.80, 1,002,025.57 and 312,750.50 is: 469,279.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,797.80 : 1,002,025.57 = 312,750.50 : x
  2. Step 2: Convert to fraction form
    667,797.80/1,002,025.57 = 312,750.50/x
  3. Step 3: Cross multiply
    667,797.80x = 1,002,025.57 × 312,750.50
  4. Step 4: Simplify right side
    667,797.80x = 313,384,000,419.60
  5. Step 5: Solve for x
    x = 313,384,000,419.60/667,797.80
  6. Step 6: Final answer
    x = 469,279.77

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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.