Home / 855,940.29-1,284,107.26-256,912.78

Finding the Fourth Proportional to 855,940.29, 1,284,107.26 and 256,912.78

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Solution

The fourth proportional to 855,940.29, 1,284,107.26 and 256,912.78 is: 385,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,940.29 : 1,284,107.26 = 256,912.78 : x
  2. Step 2: Convert to fraction form
    855,940.29/1,284,107.26 = 256,912.78/x
  3. Step 3: Cross multiply
    855,940.29x = 1,284,107.26 × 256,912.78
  4. Step 4: Simplify right side
    855,940.29x = 329,903,571,657.85
  5. Step 5: Solve for x
    x = 329,903,571,657.85/855,940.29
  6. Step 6: Final answer
    x = 385,428.26

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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.