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Finding the Fourth Proportional to 449,793.64, 620,751.78 and 248,593

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Solution

The fourth proportional to 449,793.64, 620,751.78 and 248,593 is: 343,078.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,793.64 : 620,751.78 = 248,593 : x
  2. Step 2: Convert to fraction form
    449,793.64/620,751.78 = 248,593/x
  3. Step 3: Cross multiply
    449,793.64x = 620,751.78 × 248,593
  4. Step 4: Simplify right side
    449,793.64x = 154,314,547,245.54
  5. Step 5: Solve for x
    x = 154,314,547,245.54/449,793.64
  6. Step 6: Final answer
    x = 343,078.54

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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.