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Finding the Fourth Proportional to 641,410.22, 885,164.48 and 354,956.96

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Solution

The fourth proportional to 641,410.22, 885,164.48 and 354,956.96 is: 489,850.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,410.22 : 885,164.48 = 354,956.96 : x
  2. Step 2: Convert to fraction form
    641,410.22/885,164.48 = 354,956.96/x
  3. Step 3: Cross multiply
    641,410.22x = 885,164.48 × 354,956.96
  4. Step 4: Simplify right side
    641,410.22x = 314,195,286,720.17
  5. Step 5: Solve for x
    x = 314,195,286,720.17/641,410.22
  6. Step 6: Final answer
    x = 489,850.77

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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.