Home / 499,391.20-749,086.80-331,429.60

Finding the Fourth Proportional to 499,391.20, 749,086.80 and 331,429.60

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Solution

The fourth proportional to 499,391.20, 749,086.80 and 331,429.60 is: 497,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,391.20 : 749,086.80 = 331,429.60 : x
  2. Step 2: Convert to fraction form
    499,391.20/749,086.80 = 331,429.60/x
  3. Step 3: Cross multiply
    499,391.20x = 749,086.80 × 331,429.60
  4. Step 4: Simplify right side
    499,391.20x = 248,269,538,489.28
  5. Step 5: Solve for x
    x = 248,269,538,489.28/499,391.20
  6. Step 6: Final answer
    x = 497,144.40

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Similar ratio
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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.