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Finding the Fourth Proportional to 620,792.70, 930,717.01 and 321,082.44

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Solution

The fourth proportional to 620,792.70, 930,717.01 and 321,082.44 is: 481,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,792.70 : 930,717.01 = 321,082.44 : x
  2. Step 2: Convert to fraction form
    620,792.70/930,717.01 = 321,082.44/x
  3. Step 3: Cross multiply
    620,792.70x = 930,717.01 × 321,082.44
  4. Step 4: Simplify right side
    620,792.70x = 298,836,888,520.30
  5. Step 5: Solve for x
    x = 298,836,888,520.30/620,792.70
  6. Step 6: Final answer
    x = 481,379.51

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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.