Home / 809,704.20-1,214,556.30-511,105.80

Finding the Fourth Proportional to 809,704.20, 1,214,556.30 and 511,105.80

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Solution

The fourth proportional to 809,704.20, 1,214,556.30 and 511,105.80 is: 766,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,704.20 : 1,214,556.30 = 511,105.80 : x
  2. Step 2: Convert to fraction form
    809,704.20/1,214,556.30 = 511,105.80/x
  3. Step 3: Cross multiply
    809,704.20x = 1,214,556.30 × 511,105.80
  4. Step 4: Simplify right side
    809,704.20x = 620,766,769,356.54
  5. Step 5: Solve for x
    x = 620,766,769,356.54/809,704.20
  6. Step 6: Final answer
    x = 766,658.70

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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.