Home / 722,158.92-996,589.80-399,868.38

Finding the Fourth Proportional to 722,158.92, 996,589.80 and 399,868.38

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Solution

The fourth proportional to 722,158.92, 996,589.80 and 399,868.38 is: 551,824.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,158.92 : 996,589.80 = 399,868.38 : x
  2. Step 2: Convert to fraction form
    722,158.92/996,589.80 = 399,868.38/x
  3. Step 3: Cross multiply
    722,158.92x = 996,589.80 × 399,868.38
  4. Step 4: Simplify right side
    722,158.92x = 398,504,748,850.52
  5. Step 5: Solve for x
    x = 398,504,748,850.52/722,158.92
  6. Step 6: Final answer
    x = 551,824.17

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1.5x scale

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.