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Finding the Fourth Proportional to 635,726.43, 877,302.80 and 349,264.97

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Solution

The fourth proportional to 635,726.43, 877,302.80 and 349,264.97 is: 481,985.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,726.43 : 877,302.80 = 349,264.97 : x
  2. Step 2: Convert to fraction form
    635,726.43/877,302.80 = 349,264.97/x
  3. Step 3: Cross multiply
    635,726.43x = 877,302.80 × 349,264.97
  4. Step 4: Simplify right side
    635,726.43x = 306,411,129,990.08
  5. Step 5: Solve for x
    x = 306,411,129,990.08/635,726.43
  6. Step 6: Final answer
    x = 481,985.83

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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.