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Finding the Fourth Proportional to 561,397.92, 774,728.33 and 319,680.48

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Solution

The fourth proportional to 561,397.92, 774,728.33 and 319,680.48 is: 441,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,397.92 : 774,728.33 = 319,680.48 : x
  2. Step 2: Convert to fraction form
    561,397.92/774,728.33 = 319,680.48/x
  3. Step 3: Cross multiply
    561,397.92x = 774,728.33 × 319,680.48
  4. Step 4: Simplify right side
    561,397.92x = 247,665,524,404.00
  5. Step 5: Solve for x
    x = 247,665,524,404.00/561,397.92
  6. Step 6: Final answer
    x = 441,158.61

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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.