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Finding the Fourth Proportional to 868,611, 1,198,654.20 and 481,409.92

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Solution

The fourth proportional to 868,611, 1,198,654.20 and 481,409.92 is: 664,329.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,611 : 1,198,654.20 = 481,409.92 : x
  2. Step 2: Convert to fraction form
    868,611/1,198,654.20 = 481,409.92/x
  3. Step 3: Cross multiply
    868,611x = 1,198,654.20 × 481,409.92
  4. Step 4: Simplify right side
    868,611x = 577,044,022,529.66
  5. Step 5: Solve for x
    x = 577,044,022,529.66/868,611
  6. Step 6: Final answer
    x = 664,329.63

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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.