Home / 680,745.22-1,020,986.07-259,921.06

Finding the Fourth Proportional to 680,745.22, 1,020,986.07 and 259,921.06

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Solution

The fourth proportional to 680,745.22, 1,020,986.07 and 259,921.06 is: 389,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,745.22 : 1,020,986.07 = 259,921.06 : x
  2. Step 2: Convert to fraction form
    680,745.22/1,020,986.07 = 259,921.06/x
  3. Step 3: Cross multiply
    680,745.22x = 1,020,986.07 × 259,921.06
  4. Step 4: Simplify right side
    680,745.22x = 265,375,781,559.63
  5. Step 5: Solve for x
    x = 265,375,781,559.63/680,745.22
  6. Step 6: Final answer
    x = 389,831.28

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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.