Home / 812,029.68-1,218,126.42-279,480.60

Finding the Fourth Proportional to 812,029.68, 1,218,126.42 and 279,480.60

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Solution

The fourth proportional to 812,029.68, 1,218,126.42 and 279,480.60 is: 419,249.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,029.68 : 1,218,126.42 = 279,480.60 : x
  2. Step 2: Convert to fraction form
    812,029.68/1,218,126.42 = 279,480.60/x
  3. Step 3: Cross multiply
    812,029.68x = 1,218,126.42 × 279,480.60
  4. Step 4: Simplify right side
    812,029.68x = 340,442,702,737.45
  5. Step 5: Solve for x
    x = 340,442,702,737.45/812,029.68
  6. Step 6: Final answer
    x = 419,249.09

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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.