Home / 809,475.20-1,214,212.80-774,920.60

Finding the Fourth Proportional to 809,475.20, 1,214,212.80 and 774,920.60

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Solution

The fourth proportional to 809,475.20, 1,214,212.80 and 774,920.60 is: 1,162,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,475.20 : 1,214,212.80 = 774,920.60 : x
  2. Step 2: Convert to fraction form
    809,475.20/1,214,212.80 = 774,920.60/x
  3. Step 3: Cross multiply
    809,475.20x = 1,214,212.80 × 774,920.60
  4. Step 4: Simplify right side
    809,475.20x = 940,918,511,503.68
  5. Step 5: Solve for x
    x = 940,918,511,503.68/809,475.20
  6. Step 6: Final answer
    x = 1,162,380.90

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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.