Home / 680,745.72-1,020,986.76-259,921.56

Finding the Fourth Proportional to 680,745.72, 1,020,986.76 and 259,921.56

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Solution

The fourth proportional to 680,745.72, 1,020,986.76 and 259,921.56 is: 389,832.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,745.72 : 1,020,986.76 = 259,921.56 : x
  2. Step 2: Convert to fraction form
    680,745.72/1,020,986.76 = 259,921.56/x
  3. Step 3: Cross multiply
    680,745.72x = 1,020,986.76 × 259,921.56
  4. Step 4: Simplify right side
    680,745.72x = 265,376,471,398.55
  5. Step 5: Solve for x
    x = 265,376,471,398.55/680,745.72
  6. Step 6: Final answer
    x = 389,832.01

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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.