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Finding the Fourth Proportional to 699,494.94, 965,324.79 and 397,708.38

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Solution

The fourth proportional to 699,494.94, 965,324.79 and 397,708.38 is: 548,849.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,494.94 : 965,324.79 = 397,708.38 : x
  2. Step 2: Convert to fraction form
    699,494.94/965,324.79 = 397,708.38/x
  3. Step 3: Cross multiply
    699,494.94x = 965,324.79 × 397,708.38
  4. Step 4: Simplify right side
    699,494.94x = 383,917,758,404.74
  5. Step 5: Solve for x
    x = 383,917,758,404.74/699,494.94
  6. Step 6: Final answer
    x = 548,849.94

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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.