Home / 928,209.80-1,392,120.30-455,234.60

Finding the Fourth Proportional to 928,209.80, 1,392,120.30 and 455,234.60

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Solution

The fourth proportional to 928,209.80, 1,392,120.30 and 455,234.60 is: 682,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,209.80 : 1,392,120.30 = 455,234.60 : x
  2. Step 2: Convert to fraction form
    928,209.80/1,392,120.30 = 455,234.60/x
  3. Step 3: Cross multiply
    928,209.80x = 1,392,120.30 × 455,234.60
  4. Step 4: Simplify right side
    928,209.80x = 633,741,327,922.38
  5. Step 5: Solve for x
    x = 633,741,327,922.38/928,209.80
  6. Step 6: Final answer
    x = 682,756.56

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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.