Home / 693,487.20-1,040,576.40-394,197.60

Finding the Fourth Proportional to 693,487.20, 1,040,576.40 and 394,197.60

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Solution

The fourth proportional to 693,487.20, 1,040,576.40 and 394,197.60 is: 591,492.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,487.20 : 1,040,576.40 = 394,197.60 : x
  2. Step 2: Convert to fraction form
    693,487.20/1,040,576.40 = 394,197.60/x
  3. Step 3: Cross multiply
    693,487.20x = 1,040,576.40 × 394,197.60
  4. Step 4: Simplify right side
    693,487.20x = 410,192,719,496.64
  5. Step 5: Solve for x
    x = 410,192,719,496.64/693,487.20
  6. Step 6: Final answer
    x = 591,492.85

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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.