Home / 681,921.60-1,023,512.64-345,198.56

Finding the Fourth Proportional to 681,921.60, 1,023,512.64 and 345,198.56

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Solution

The fourth proportional to 681,921.60, 1,023,512.64 and 345,198.56 is: 518,116.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,921.60 : 1,023,512.64 = 345,198.56 : x
  2. Step 2: Convert to fraction form
    681,921.60/1,023,512.64 = 345,198.56/x
  3. Step 3: Cross multiply
    681,921.60x = 1,023,512.64 × 345,198.56
  4. Step 4: Simplify right side
    681,921.60x = 353,315,089,469.80
  5. Step 5: Solve for x
    x = 353,315,089,469.80/681,921.60
  6. Step 6: Final answer
    x = 518,116.88

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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.