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Finding the Fourth Proportional to 635,863.08, 877,273.96 and 394,057.43

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Solution

The fourth proportional to 635,863.08, 877,273.96 and 394,057.43 is: 543,664.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,863.08 : 877,273.96 = 394,057.43 : x
  2. Step 2: Convert to fraction form
    635,863.08/877,273.96 = 394,057.43/x
  3. Step 3: Cross multiply
    635,863.08x = 877,273.96 × 394,057.43
  4. Step 4: Simplify right side
    635,863.08x = 345,696,322,083.52
  5. Step 5: Solve for x
    x = 345,696,322,083.52/635,863.08
  6. Step 6: Final answer
    x = 543,664.72

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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.