Home / 819,161.55-1,228,741.26-220,122.72

Finding the Fourth Proportional to 819,161.55, 1,228,741.26 and 220,122.72

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Solution

The fourth proportional to 819,161.55, 1,228,741.26 and 220,122.72 is: 330,183.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,161.55 : 1,228,741.26 = 220,122.72 : x
  2. Step 2: Convert to fraction form
    819,161.55/1,228,741.26 = 220,122.72/x
  3. Step 3: Cross multiply
    819,161.55x = 1,228,741.26 × 220,122.72
  4. Step 4: Simplify right side
    819,161.55x = 270,473,868,327.43
  5. Step 5: Solve for x
    x = 270,473,868,327.43/819,161.55
  6. Step 6: Final answer
    x = 330,183.79

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Double scale
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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.