Home / 669,921.60-1,004,882.40-220,711.80

Finding the Fourth Proportional to 669,921.60, 1,004,882.40 and 220,711.80

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Solution

The fourth proportional to 669,921.60, 1,004,882.40 and 220,711.80 is: 331,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,921.60 : 1,004,882.40 = 220,711.80 : x
  2. Step 2: Convert to fraction form
    669,921.60/1,004,882.40 = 220,711.80/x
  3. Step 3: Cross multiply
    669,921.60x = 1,004,882.40 × 220,711.80
  4. Step 4: Simplify right side
    669,921.60x = 221,789,403,292.32
  5. Step 5: Solve for x
    x = 221,789,403,292.32/669,921.60
  6. Step 6: Final answer
    x = 331,067.70

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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.