Home / 678,717.28-936,525.54-392,181.76

Finding the Fourth Proportional to 678,717.28, 936,525.54 and 392,181.76

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Solution

The fourth proportional to 678,717.28, 936,525.54 and 392,181.76 is: 541,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,717.28 : 936,525.54 = 392,181.76 : x
  2. Step 2: Convert to fraction form
    678,717.28/936,525.54 = 392,181.76/x
  3. Step 3: Cross multiply
    678,717.28x = 936,525.54 × 392,181.76
  4. Step 4: Simplify right side
    678,717.28x = 367,288,234,562.15
  5. Step 5: Solve for x
    x = 367,288,234,562.15/678,717.28
  6. Step 6: Final answer
    x = 541,150.56

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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.