Home / 765,640.36-1,147,896.78-260,065.09

Finding the Fourth Proportional to 765,640.36, 1,147,896.78 and 260,065.09

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Solution

The fourth proportional to 765,640.36, 1,147,896.78 and 260,065.09 is: 389,906.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,640.36 : 1,147,896.78 = 260,065.09 : x
  2. Step 2: Convert to fraction form
    765,640.36/1,147,896.78 = 260,065.09/x
  3. Step 3: Cross multiply
    765,640.36x = 1,147,896.78 × 260,065.09
  4. Step 4: Simplify right side
    765,640.36x = 298,527,879,401.41
  5. Step 5: Solve for x
    x = 298,527,879,401.41/765,640.36
  6. Step 6: Final answer
    x = 389,906.14

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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.