Home / 809,939.40-1,214,909.10-798,129.60

Finding the Fourth Proportional to 809,939.40, 1,214,909.10 and 798,129.60

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Solution

The fourth proportional to 809,939.40, 1,214,909.10 and 798,129.60 is: 1,197,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,939.40 : 1,214,909.10 = 798,129.60 : x
  2. Step 2: Convert to fraction form
    809,939.40/1,214,909.10 = 798,129.60/x
  3. Step 3: Cross multiply
    809,939.40x = 1,214,909.10 × 798,129.60
  4. Step 4: Simplify right side
    809,939.40x = 969,654,914,019.36
  5. Step 5: Solve for x
    x = 969,654,914,019.36/809,939.40
  6. Step 6: Final answer
    x = 1,197,194.40

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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.