Home / 438,220.60-655,601.36-331,910.80

Finding the Fourth Proportional to 438,220.60, 655,601.36 and 331,910.80

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Solution

The fourth proportional to 438,220.60, 655,601.36 and 331,910.80 is: 496,556.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,220.60 : 655,601.36 = 331,910.80 : x
  2. Step 2: Convert to fraction form
    438,220.60/655,601.36 = 331,910.80/x
  3. Step 3: Cross multiply
    438,220.60x = 655,601.36 × 331,910.80
  4. Step 4: Simplify right side
    438,220.60x = 217,601,170,872.29
  5. Step 5: Solve for x
    x = 217,601,170,872.29/438,220.60
  6. Step 6: Final answer
    x = 496,556.24

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1.5x scale

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.