Home / 494,149.03-681,998.79-312,877.78

Finding the Fourth Proportional to 494,149.03, 681,998.79 and 312,877.78

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Solution

The fourth proportional to 494,149.03, 681,998.79 and 312,877.78 is: 431,817.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,149.03 : 681,998.79 = 312,877.78 : x
  2. Step 2: Convert to fraction form
    494,149.03/681,998.79 = 312,877.78/x
  3. Step 3: Cross multiply
    494,149.03x = 681,998.79 × 312,877.78
  4. Step 4: Simplify right side
    494,149.03x = 213,382,267,377.89
  5. Step 5: Solve for x
    x = 213,382,267,377.89/494,149.03
  6. Step 6: Final answer
    x = 431,817.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.