Home / 801,239.60-1,200,109.80-485,145.20

Finding the Fourth Proportional to 801,239.60, 1,200,109.80 and 485,145.20

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Solution

The fourth proportional to 801,239.60, 1,200,109.80 and 485,145.20 is: 726,658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,239.60 : 1,200,109.80 = 485,145.20 : x
  2. Step 2: Convert to fraction form
    801,239.60/1,200,109.80 = 485,145.20/x
  3. Step 3: Cross multiply
    801,239.60x = 1,200,109.80 × 485,145.20
  4. Step 4: Simplify right side
    801,239.60x = 582,227,508,942.96
  5. Step 5: Solve for x
    x = 582,227,508,942.96/801,239.60
  6. Step 6: Final answer
    x = 726,658.43

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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.