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Finding the Fourth Proportional to 490,388.77, 733,431.88 and 436,731.85

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Solution

The fourth proportional to 490,388.77, 733,431.88 and 436,731.85 is: 653,181.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,388.77 : 733,431.88 = 436,731.85 : x
  2. Step 2: Convert to fraction form
    490,388.77/733,431.88 = 436,731.85/x
  3. Step 3: Cross multiply
    490,388.77x = 733,431.88 × 436,731.85
  4. Step 4: Simplify right side
    490,388.77x = 320,313,061,801.38
  5. Step 5: Solve for x
    x = 320,313,061,801.38/490,388.77
  6. Step 6: Final answer
    x = 653,181.89

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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.