Home / 812,276.40-1,218,414.60-798,279.60

Finding the Fourth Proportional to 812,276.40, 1,218,414.60 and 798,279.60

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Solution

The fourth proportional to 812,276.40, 1,218,414.60 and 798,279.60 is: 1,197,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,276.40 : 1,218,414.60 = 798,279.60 : x
  2. Step 2: Convert to fraction form
    812,276.40/1,218,414.60 = 798,279.60/x
  3. Step 3: Cross multiply
    812,276.40x = 1,218,414.60 × 798,279.60
  4. Step 4: Simplify right side
    812,276.40x = 972,635,519,522.16
  5. Step 5: Solve for x
    x = 972,635,519,522.16/812,276.40
  6. Step 6: Final answer
    x = 1,197,419.40

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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.