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Finding the Fourth Proportional to 513,672.72, 770,640.53 and 300,620.04

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Solution

The fourth proportional to 513,672.72, 770,640.53 and 300,620.04 is: 451,006.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,672.72 : 770,640.53 = 300,620.04 : x
  2. Step 2: Convert to fraction form
    513,672.72/770,640.53 = 300,620.04/x
  3. Step 3: Cross multiply
    513,672.72x = 770,640.53 × 300,620.04
  4. Step 4: Simplify right side
    513,672.72x = 231,669,986,954.22
  5. Step 5: Solve for x
    x = 231,669,986,954.22/513,672.72
  6. Step 6: Final answer
    x = 451,006.99

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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.