Home / 394,515.20-591,772.80-331,529.60

Finding the Fourth Proportional to 394,515.20, 591,772.80 and 331,529.60

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Solution

The fourth proportional to 394,515.20, 591,772.80 and 331,529.60 is: 497,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,515.20 : 591,772.80 = 331,529.60 : x
  2. Step 2: Convert to fraction form
    394,515.20/591,772.80 = 331,529.60/x
  3. Step 3: Cross multiply
    394,515.20x = 591,772.80 × 331,529.60
  4. Step 4: Simplify right side
    394,515.20x = 196,190,199,674.88
  5. Step 5: Solve for x
    x = 196,190,199,674.88/394,515.20
  6. Step 6: Final answer
    x = 497,294.40

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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.