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Finding the Fourth Proportional to 449,003.78, 620,140.66 and 327,039.54

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Solution

The fourth proportional to 449,003.78, 620,140.66 and 327,039.54 is: 451,690.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,003.78 : 620,140.66 = 327,039.54 : x
  2. Step 2: Convert to fraction form
    449,003.78/620,140.66 = 327,039.54/x
  3. Step 3: Cross multiply
    449,003.78x = 620,140.66 × 327,039.54
  4. Step 4: Simplify right side
    449,003.78x = 202,810,516,181.70
  5. Step 5: Solve for x
    x = 202,810,516,181.70/449,003.78
  6. Step 6: Final answer
    x = 451,690.00

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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.