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Finding the Fourth Proportional to 635,480.43, 876,978.27 and 349,006.71

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Solution

The fourth proportional to 635,480.43, 876,978.27 and 349,006.71 is: 481,637.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,480.43 : 876,978.27 = 349,006.71 : x
  2. Step 2: Convert to fraction form
    635,480.43/876,978.27 = 349,006.71/x
  3. Step 3: Cross multiply
    635,480.43x = 876,978.27 × 349,006.71
  4. Step 4: Simplify right side
    635,480.43x = 306,071,300,754.19
  5. Step 5: Solve for x
    x = 306,071,300,754.19/635,480.43
  6. Step 6: Final answer
    x = 481,637.65

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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.