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Finding the Fourth Proportional to 635,862.08, 877,272.58 and 394,056.43

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Solution

The fourth proportional to 635,862.08, 877,272.58 and 394,056.43 is: 543,663.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,862.08 : 877,272.58 = 394,056.43 : x
  2. Step 2: Convert to fraction form
    635,862.08/877,272.58 = 394,056.43/x
  3. Step 3: Cross multiply
    635,862.08x = 877,272.58 × 394,056.43
  4. Step 4: Simplify right side
    635,862.08x = 345,694,901,011.69
  5. Step 5: Solve for x
    x = 345,694,901,011.69/635,862.08
  6. Step 6: Final answer
    x = 543,663.34

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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.