Home / 1,321,132.20-1,981,698.30-323,860.20

Finding the Fourth Proportional to 1,321,132.20, 1,981,698.30 and 323,860.20

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Solution

The fourth proportional to 1,321,132.20, 1,981,698.30 and 323,860.20 is: 485,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,132.20 : 1,981,698.30 = 323,860.20 : x
  2. Step 2: Convert to fraction form
    1,321,132.20/1,981,698.30 = 323,860.20/x
  3. Step 3: Cross multiply
    1,321,132.20x = 1,981,698.30 × 323,860.20
  4. Step 4: Simplify right side
    1,321,132.20x = 641,793,207,777.66
  5. Step 5: Solve for x
    x = 641,793,207,777.66/1,321,132.20
  6. Step 6: Final answer
    x = 485,790.30

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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.