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Finding the Fourth Proportional to 629,660.80, 944,606.40 and 255,721.60

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Solution

The fourth proportional to 629,660.80, 944,606.40 and 255,721.60 is: 383,629.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,660.80 : 944,606.40 = 255,721.60 : x
  2. Step 2: Convert to fraction form
    629,660.80/944,606.40 = 255,721.60/x
  3. Step 3: Cross multiply
    629,660.80x = 944,606.40 × 255,721.60
  4. Step 4: Simplify right side
    629,660.80x = 241,556,259,978.24
  5. Step 5: Solve for x
    x = 241,556,259,978.24/629,660.80
  6. Step 6: Final answer
    x = 383,629.19

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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.