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Finding the Fourth Proportional to 978,627.66, 1,467,589.30 and 338,757.54

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Solution

The fourth proportional to 978,627.66, 1,467,589.30 and 338,757.54 is: 508,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,627.66 : 1,467,589.30 = 338,757.54 : x
  2. Step 2: Convert to fraction form
    978,627.66/1,467,589.30 = 338,757.54/x
  3. Step 3: Cross multiply
    978,627.66x = 1,467,589.30 × 338,757.54
  4. Step 4: Simplify right side
    978,627.66x = 497,156,940,998.32
  5. Step 5: Solve for x
    x = 497,156,940,998.32/978,627.66
  6. Step 6: Final answer
    x = 508,014.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.