Home / 1,327,694.40-1,991,311.20-485,812.80

Finding the Fourth Proportional to 1,327,694.40, 1,991,311.20 and 485,812.80

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Solution

The fourth proportional to 1,327,694.40, 1,991,311.20 and 485,812.80 is: 728,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,694.40 : 1,991,311.20 = 485,812.80 : x
  2. Step 2: Convert to fraction form
    1,327,694.40/1,991,311.20 = 485,812.80/x
  3. Step 3: Cross multiply
    1,327,694.40x = 1,991,311.20 × 485,812.80
  4. Step 4: Simplify right side
    1,327,694.40x = 967,404,469,743.36
  5. Step 5: Solve for x
    x = 967,404,469,743.36/1,327,694.40
  6. Step 6: Final answer
    x = 728,634.90

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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.