Home / 3,121,801.20-4,682,701.80-992,100.60

Finding the Fourth Proportional to 3,121,801.20, 4,682,701.80 and 992,100.60

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Solution

The fourth proportional to 3,121,801.20, 4,682,701.80 and 992,100.60 is: 1,488,150.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,801.20 : 4,682,701.80 = 992,100.60 : x
  2. Step 2: Convert to fraction form
    3,121,801.20/4,682,701.80 = 992,100.60/x
  3. Step 3: Cross multiply
    3,121,801.20x = 4,682,701.80 × 992,100.60
  4. Step 4: Simplify right side
    3,121,801.20x = 4,645,711,265,401.08
  5. Step 5: Solve for x
    x = 4,645,711,265,401.08/3,121,801.20
  6. Step 6: Final answer
    x = 1,488,150.90

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Double scale
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Similar ratio
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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.