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Finding the Fourth Proportional to 640,625.52, 884,151 and 368,687.88

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Solution

The fourth proportional to 640,625.52, 884,151 and 368,687.88 is: 508,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,625.52 : 884,151 = 368,687.88 : x
  2. Step 2: Convert to fraction form
    640,625.52/884,151 = 368,687.88/x
  3. Step 3: Cross multiply
    640,625.52x = 884,151 × 368,687.88
  4. Step 4: Simplify right side
    640,625.52x = 325,975,757,789.88
  5. Step 5: Solve for x
    x = 325,975,757,789.88/640,625.52
  6. Step 6: Final answer
    x = 508,839.79

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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.