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Finding the Fourth Proportional to 658,649.64, 908,936.31 and 356,843.64

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Solution

The fourth proportional to 658,649.64, 908,936.31 and 356,843.64 is: 492,444.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,649.64 : 908,936.31 = 356,843.64 : x
  2. Step 2: Convert to fraction form
    658,649.64/908,936.31 = 356,843.64/x
  3. Step 3: Cross multiply
    658,649.64x = 908,936.31 × 356,843.64
  4. Step 4: Simplify right side
    658,649.64x = 324,348,141,388.57
  5. Step 5: Solve for x
    x = 324,348,141,388.57/658,649.64
  6. Step 6: Final answer
    x = 492,444.12

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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.