Home / 722,171.49-996,584.43-399,874.65

Finding the Fourth Proportional to 722,171.49, 996,584.43 and 399,874.65

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Solution

The fourth proportional to 722,171.49, 996,584.43 and 399,874.65 is: 551,820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,171.49 : 996,584.43 = 399,874.65 : x
  2. Step 2: Convert to fraction form
    722,171.49/996,584.43 = 399,874.65/x
  3. Step 3: Cross multiply
    722,171.49x = 996,584.43 × 399,874.65
  4. Step 4: Simplify right side
    722,171.49x = 398,508,850,141.70
  5. Step 5: Solve for x
    x = 398,508,850,141.70/722,171.49
  6. Step 6: Final answer
    x = 551,820.25

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Double scale
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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.