Home / 764,689.10-1,147,908.45-449,323.70

Finding the Fourth Proportional to 764,689.10, 1,147,908.45 and 449,323.70

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Solution

The fourth proportional to 764,689.10, 1,147,908.45 and 449,323.70 is: 674,499.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,689.10 : 1,147,908.45 = 449,323.70 : x
  2. Step 2: Convert to fraction form
    764,689.10/1,147,908.45 = 449,323.70/x
  3. Step 3: Cross multiply
    764,689.10x = 1,147,908.45 × 449,323.70
  4. Step 4: Simplify right side
    764,689.10x = 515,782,472,015.27
  5. Step 5: Solve for x
    x = 515,782,472,015.27/764,689.10
  6. Step 6: Final answer
    x = 674,499.57

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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.