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Finding the Fourth Proportional to 635,627.84, 876,447.60 and 405,883.04

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Solution

The fourth proportional to 635,627.84, 876,447.60 and 405,883.04 is: 559,659.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,627.84 : 876,447.60 = 405,883.04 : x
  2. Step 2: Convert to fraction form
    635,627.84/876,447.60 = 405,883.04/x
  3. Step 3: Cross multiply
    635,627.84x = 876,447.60 × 405,883.04
  4. Step 4: Simplify right side
    635,627.84x = 355,735,216,288.70
  5. Step 5: Solve for x
    x = 355,735,216,288.70/635,627.84
  6. Step 6: Final answer
    x = 559,659.59

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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.