Home / 641,448.78-885,186.03-354,951.66

Finding the Fourth Proportional to 641,448.78, 885,186.03 and 354,951.66

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Solution

The fourth proportional to 641,448.78, 885,186.03 and 354,951.66 is: 489,825.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,448.78 : 885,186.03 = 354,951.66 : x
  2. Step 2: Convert to fraction form
    641,448.78/885,186.03 = 354,951.66/x
  3. Step 3: Cross multiply
    641,448.78x = 885,186.03 × 354,951.66
  4. Step 4: Simplify right side
    641,448.78x = 314,198,250,757.31
  5. Step 5: Solve for x
    x = 314,198,250,757.31/641,448.78
  6. Step 6: Final answer
    x = 489,825.94

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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.