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Finding the Fourth Proportional to 635,731.78, 877,310.21 and 349,270.32

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Solution

The fourth proportional to 635,731.78, 877,310.21 and 349,270.32 is: 481,993.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,731.78 : 877,310.21 = 349,270.32 : x
  2. Step 2: Convert to fraction form
    635,731.78/877,310.21 = 349,270.32/x
  3. Step 3: Cross multiply
    635,731.78x = 877,310.21 × 349,270.32
  4. Step 4: Simplify right side
    635,731.78x = 306,418,418,659.14
  5. Step 5: Solve for x
    x = 306,418,418,659.14/635,731.78
  6. Step 6: Final answer
    x = 481,993.24

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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.