Home / 681,731.20-1,022,596.80-386,819.20

Finding the Fourth Proportional to 681,731.20, 1,022,596.80 and 386,819.20

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Solution

The fourth proportional to 681,731.20, 1,022,596.80 and 386,819.20 is: 580,228.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,731.20 : 1,022,596.80 = 386,819.20 : x
  2. Step 2: Convert to fraction form
    681,731.20/1,022,596.80 = 386,819.20/x
  3. Step 3: Cross multiply
    681,731.20x = 1,022,596.80 × 386,819.20
  4. Step 4: Simplify right side
    681,731.20x = 395,560,076,098.56
  5. Step 5: Solve for x
    x = 395,560,076,098.56/681,731.20
  6. Step 6: Final answer
    x = 580,228.80

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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.