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Finding the Fourth Proportional to 447,391.50, 617,912.19 and 303,911.34

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Solution

The fourth proportional to 447,391.50, 617,912.19 and 303,911.34 is: 419,745.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,391.50 : 617,912.19 = 303,911.34 : x
  2. Step 2: Convert to fraction form
    447,391.50/617,912.19 = 303,911.34/x
  3. Step 3: Cross multiply
    447,391.50x = 617,912.19 × 303,911.34
  4. Step 4: Simplify right side
    447,391.50x = 187,790,521,665.24
  5. Step 5: Solve for x
    x = 187,790,521,665.24/447,391.50
  6. Step 6: Final answer
    x = 419,745.39

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1.5x scale

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.