Home / 693,110.80-1,039,666.20-394,512.40

Finding the Fourth Proportional to 693,110.80, 1,039,666.20 and 394,512.40

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Solution

The fourth proportional to 693,110.80, 1,039,666.20 and 394,512.40 is: 591,768.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,110.80 : 1,039,666.20 = 394,512.40 : x
  2. Step 2: Convert to fraction form
    693,110.80/1,039,666.20 = 394,512.40/x
  3. Step 3: Cross multiply
    693,110.80x = 1,039,666.20 × 394,512.40
  4. Step 4: Simplify right side
    693,110.80x = 410,161,207,760.88
  5. Step 5: Solve for x
    x = 410,161,207,760.88/693,110.80
  6. Step 6: Final answer
    x = 591,768.60

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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.