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Finding the Fourth Proportional to 490,618.48, 734,460.90 and 300,480.16

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Solution

The fourth proportional to 490,618.48, 734,460.90 and 300,480.16 is: 449,821.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,618.48 : 734,460.90 = 300,480.16 : x
  2. Step 2: Convert to fraction form
    490,618.48/734,460.90 = 300,480.16/x
  3. Step 3: Cross multiply
    490,618.48x = 734,460.90 × 300,480.16
  4. Step 4: Simplify right side
    490,618.48x = 220,690,928,745.74
  5. Step 5: Solve for x
    x = 220,690,928,745.74/490,618.48
  6. Step 6: Final answer
    x = 449,821.88

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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.