Home / 662,940.78-914,834.10-405,249.33

Finding the Fourth Proportional to 662,940.78, 914,834.10 and 405,249.33

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Solution

The fourth proportional to 662,940.78, 914,834.10 and 405,249.33 is: 559,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,940.78 : 914,834.10 = 405,249.33 : x
  2. Step 2: Convert to fraction form
    662,940.78/914,834.10 = 405,249.33/x
  3. Step 3: Cross multiply
    662,940.78x = 914,834.10 × 405,249.33
  4. Step 4: Simplify right side
    662,940.78x = 370,735,906,086.15
  5. Step 5: Solve for x
    x = 370,735,906,086.15/662,940.78
  6. Step 6: Final answer
    x = 559,229.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.