Home / 853,356.43-1,280,083.79-320,882.07

Finding the Fourth Proportional to 853,356.43, 1,280,083.79 and 320,882.07

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Solution

The fourth proportional to 853,356.43, 1,280,083.79 and 320,882.07 is: 481,341.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,356.43 : 1,280,083.79 = 320,882.07 : x
  2. Step 2: Convert to fraction form
    853,356.43/1,280,083.79 = 320,882.07/x
  3. Step 3: Cross multiply
    853,356.43x = 1,280,083.79 × 320,882.07
  4. Step 4: Simplify right side
    853,356.43x = 410,755,936,059.56
  5. Step 5: Solve for x
    x = 410,755,936,059.56/853,356.43
  6. Step 6: Final answer
    x = 481,341.59

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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.