Home / 680,131.20-1,020,585.60-259,708.80

Finding the Fourth Proportional to 680,131.20, 1,020,585.60 and 259,708.80

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Solution

The fourth proportional to 680,131.20, 1,020,585.60 and 259,708.80 is: 389,711.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,131.20 : 1,020,585.60 = 259,708.80 : x
  2. Step 2: Convert to fraction form
    680,131.20/1,020,585.60 = 259,708.80/x
  3. Step 3: Cross multiply
    680,131.20x = 1,020,585.60 × 259,708.80
  4. Step 4: Simplify right side
    680,131.20x = 265,055,061,473.28
  5. Step 5: Solve for x
    x = 265,055,061,473.28/680,131.20
  6. Step 6: Final answer
    x = 389,711.66

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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.