Home / 820,983.40-1,231,351.98-259,945

Finding the Fourth Proportional to 820,983.40, 1,231,351.98 and 259,945

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Solution

The fourth proportional to 820,983.40, 1,231,351.98 and 259,945 is: 389,878.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,983.40 : 1,231,351.98 = 259,945 : x
  2. Step 2: Convert to fraction form
    820,983.40/1,231,351.98 = 259,945/x
  3. Step 3: Cross multiply
    820,983.40x = 1,231,351.98 × 259,945
  4. Step 4: Simplify right side
    820,983.40x = 320,083,790,441.10
  5. Step 5: Solve for x
    x = 320,083,790,441.10/820,983.40
  6. Step 6: Final answer
    x = 389,878.52

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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.