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Finding the Fourth Proportional to 511,988.66, 767,923.02 and 321,887.79

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Solution

The fourth proportional to 511,988.66, 767,923.02 and 321,887.79 is: 482,793.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,988.66 : 767,923.02 = 321,887.79 : x
  2. Step 2: Convert to fraction form
    511,988.66/767,923.02 = 321,887.79/x
  3. Step 3: Cross multiply
    511,988.66x = 767,923.02 × 321,887.79
  4. Step 4: Simplify right side
    511,988.66x = 247,185,040,105.61
  5. Step 5: Solve for x
    x = 247,185,040,105.61/511,988.66
  6. Step 6: Final answer
    x = 482,793.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.