Home / 809,278.24-1,212,359.44-505,791.04

Finding the Fourth Proportional to 809,278.24, 1,212,359.44 and 505,791.04

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Solution

The fourth proportional to 809,278.24, 1,212,359.44 and 505,791.04 is: 757,712.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,278.24 : 1,212,359.44 = 505,791.04 : x
  2. Step 2: Convert to fraction form
    809,278.24/1,212,359.44 = 505,791.04/x
  3. Step 3: Cross multiply
    809,278.24x = 1,212,359.44 × 505,791.04
  4. Step 4: Simplify right side
    809,278.24x = 613,200,542,011.42
  5. Step 5: Solve for x
    x = 613,200,542,011.42/809,278.24
  6. Step 6: Final answer
    x = 757,712.88

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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.