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Finding the Fourth Proportional to 455,586.64, 628,734.08 and 261,992.04

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Solution

The fourth proportional to 455,586.64, 628,734.08 and 261,992.04 is: 361,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,586.64 : 628,734.08 = 261,992.04 : x
  2. Step 2: Convert to fraction form
    455,586.64/628,734.08 = 261,992.04/x
  3. Step 3: Cross multiply
    455,586.64x = 628,734.08 × 261,992.04
  4. Step 4: Simplify right side
    455,586.64x = 164,723,324,236.72
  5. Step 5: Solve for x
    x = 164,723,324,236.72/455,586.64
  6. Step 6: Final answer
    x = 361,563.11

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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.