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Finding the Fourth Proportional to 809,375.20, 1,214,062.80 and 774,820.60

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Solution

The fourth proportional to 809,375.20, 1,214,062.80 and 774,820.60 is: 1,162,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,375.20 : 1,214,062.80 = 774,820.60 : x
  2. Step 2: Convert to fraction form
    809,375.20/1,214,062.80 = 774,820.60/x
  3. Step 3: Cross multiply
    809,375.20x = 1,214,062.80 × 774,820.60
  4. Step 4: Simplify right side
    809,375.20x = 940,680,867,133.68
  5. Step 5: Solve for x
    x = 940,680,867,133.68/809,375.20
  6. Step 6: Final answer
    x = 1,162,230.90

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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.