Home / 678,788.52-936,517.46-392,204.04

Finding the Fourth Proportional to 678,788.52, 936,517.46 and 392,204.04

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Solution

The fourth proportional to 678,788.52, 936,517.46 and 392,204.04 is: 541,119.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,788.52 : 936,517.46 = 392,204.04 : x
  2. Step 2: Convert to fraction form
    678,788.52/936,517.46 = 392,204.04/x
  3. Step 3: Cross multiply
    678,788.52x = 936,517.46 × 392,204.04
  4. Step 4: Simplify right side
    678,788.52x = 367,305,929,381.52
  5. Step 5: Solve for x
    x = 367,305,929,381.52/678,788.52
  6. Step 6: Final answer
    x = 541,119.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.