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Finding the Fourth Proportional to 637,399.78, 879,578.28 and 350,863.90

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Solution

The fourth proportional to 637,399.78, 879,578.28 and 350,863.90 is: 484,173.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,399.78 : 879,578.28 = 350,863.90 : x
  2. Step 2: Convert to fraction form
    637,399.78/879,578.28 = 350,863.90/x
  3. Step 3: Cross multiply
    637,399.78x = 879,578.28 × 350,863.90
  4. Step 4: Simplify right side
    637,399.78x = 308,612,265,676.09
  5. Step 5: Solve for x
    x = 308,612,265,676.09/637,399.78
  6. Step 6: Final answer
    x = 484,173.79

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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.