Home / 394,485.20-591,727.80-331,499.60

Finding the Fourth Proportional to 394,485.20, 591,727.80 and 331,499.60

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Solution

The fourth proportional to 394,485.20, 591,727.80 and 331,499.60 is: 497,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,485.20 : 591,727.80 = 331,499.60 : x
  2. Step 2: Convert to fraction form
    394,485.20/591,727.80 = 331,499.60/x
  3. Step 3: Cross multiply
    394,485.20x = 591,727.80 × 331,499.60
  4. Step 4: Simplify right side
    394,485.20x = 196,157,529,008.88
  5. Step 5: Solve for x
    x = 196,157,529,008.88/394,485.20
  6. Step 6: Final answer
    x = 497,249.40

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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.