Home / 722,190.38-996,610.50-399,893.55

Finding the Fourth Proportional to 722,190.38, 996,610.50 and 399,893.55

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Solution

The fourth proportional to 722,190.38, 996,610.50 and 399,893.55 is: 551,846.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,190.38 : 996,610.50 = 399,893.55 : x
  2. Step 2: Convert to fraction form
    722,190.38/996,610.50 = 399,893.55/x
  3. Step 3: Cross multiply
    722,190.38x = 996,610.50 × 399,893.55
  4. Step 4: Simplify right side
    722,190.38x = 398,538,110,812.28
  5. Step 5: Solve for x
    x = 398,538,110,812.28/722,190.38
  6. Step 6: Final answer
    x = 551,846.33

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Double scale
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Similar ratio
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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.