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Finding the Fourth Proportional to 1,764,974.28, 2,647,723.88 and 818,440.68

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Solution

The fourth proportional to 1,764,974.28, 2,647,723.88 and 818,440.68 is: 1,227,782.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764,974.28 : 2,647,723.88 = 818,440.68 : x
  2. Step 2: Convert to fraction form
    1,764,974.28/2,647,723.88 = 818,440.68/x
  3. Step 3: Cross multiply
    1,764,974.28x = 2,647,723.88 × 818,440.68
  4. Step 4: Simplify right side
    1,764,974.28x = 2,167,004,932,799.44
  5. Step 5: Solve for x
    x = 2,167,004,932,799.44/1,764,974.28
  6. Step 6: Final answer
    x = 1,227,782.73

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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.