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Finding the Fourth Proportional to 657,843.61, 907,824.17 and 356,037.61

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Solution

The fourth proportional to 657,843.61, 907,824.17 and 356,037.61 is: 491,331.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,843.61 : 907,824.17 = 356,037.61 : x
  2. Step 2: Convert to fraction form
    657,843.61/907,824.17 = 356,037.61/x
  3. Step 3: Cross multiply
    657,843.61x = 907,824.17 × 356,037.61
  4. Step 4: Simplify right side
    657,843.61x = 323,219,546,006.85
  5. Step 5: Solve for x
    x = 323,219,546,006.85/657,843.61
  6. Step 6: Final answer
    x = 491,331.89

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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.