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Finding the Fourth Proportional to 646,758.37, 969,401.87 and 393,480.56

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Solution

The fourth proportional to 646,758.37, 969,401.87 and 393,480.56 is: 589,773.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,758.37 : 969,401.87 = 393,480.56 : x
  2. Step 2: Convert to fraction form
    646,758.37/969,401.87 = 393,480.56/x
  3. Step 3: Cross multiply
    646,758.37x = 969,401.87 × 393,480.56
  4. Step 4: Simplify right side
    646,758.37x = 381,440,792,604.30
  5. Step 5: Solve for x
    x = 381,440,792,604.30/646,758.37
  6. Step 6: Final answer
    x = 589,773.26

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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.