Home / 881,217.78-1,216,087.92-478,809.78

Finding the Fourth Proportional to 881,217.78, 1,216,087.92 and 478,809.78

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Solution

The fourth proportional to 881,217.78, 1,216,087.92 and 478,809.78 is: 660,761.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,217.78 : 1,216,087.92 = 478,809.78 : x
  2. Step 2: Convert to fraction form
    881,217.78/1,216,087.92 = 478,809.78/x
  3. Step 3: Cross multiply
    881,217.78x = 1,216,087.92 × 478,809.78
  4. Step 4: Simplify right side
    881,217.78x = 582,274,789,435.86
  5. Step 5: Solve for x
    x = 582,274,789,435.86/881,217.78
  6. Step 6: Final answer
    x = 660,761.51

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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.