Home / 680,469.20-1,021,092.60-260,046.80

Finding the Fourth Proportional to 680,469.20, 1,021,092.60 and 260,046.80

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Solution

The fourth proportional to 680,469.20, 1,021,092.60 and 260,046.80 is: 390,218.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,469.20 : 1,021,092.60 = 260,046.80 : x
  2. Step 2: Convert to fraction form
    680,469.20/1,021,092.60 = 260,046.80/x
  3. Step 3: Cross multiply
    680,469.20x = 1,021,092.60 × 260,046.80
  4. Step 4: Simplify right side
    680,469.20x = 265,531,863,133.68
  5. Step 5: Solve for x
    x = 265,531,863,133.68/680,469.20
  6. Step 6: Final answer
    x = 390,218.78

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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.