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Finding the Fourth Proportional to 488,697.81, 674,003.08 and 343,982.66

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Solution

The fourth proportional to 488,697.81, 674,003.08 and 343,982.66 is: 474,414.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,697.81 : 674,003.08 = 343,982.66 : x
  2. Step 2: Convert to fraction form
    488,697.81/674,003.08 = 343,982.66/x
  3. Step 3: Cross multiply
    488,697.81x = 674,003.08 × 343,982.66
  4. Step 4: Simplify right side
    488,697.81x = 231,845,372,229.64
  5. Step 5: Solve for x
    x = 231,845,372,229.64/488,697.81
  6. Step 6: Final answer
    x = 474,414.59

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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.