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Finding the Fourth Proportional to 518,660, 777,990 and 168,452

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Solution

The fourth proportional to 518,660, 777,990 and 168,452 is: 252,678

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,660 : 777,990 = 168,452 : x
  2. Step 2: Convert to fraction form
    518,660/777,990 = 168,452/x
  3. Step 3: Cross multiply
    518,660x = 777,990 × 168,452
  4. Step 4: Simplify right side
    518,660x = 131,053,971,480
  5. Step 5: Solve for x
    x = 131,053,971,480/518,660
  6. Step 6: Final answer
    x = 252,678

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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.