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Finding the Fourth Proportional to 543,399.89, 749,877.26 and 325,731.54

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Solution

The fourth proportional to 543,399.89, 749,877.26 and 325,731.54 is: 449,500.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,399.89 : 749,877.26 = 325,731.54 : x
  2. Step 2: Convert to fraction form
    543,399.89/749,877.26 = 325,731.54/x
  3. Step 3: Cross multiply
    543,399.89x = 749,877.26 × 325,731.54
  4. Step 4: Simplify right side
    543,399.89x = 244,258,673,082.12
  5. Step 5: Solve for x
    x = 244,258,673,082.12/543,399.89
  6. Step 6: Final answer
    x = 449,500.78

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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.