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Finding the Fourth Proportional to 494,505.77, 682,505.33 and 290,556.65

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Solution

The fourth proportional to 494,505.77, 682,505.33 and 290,556.65 is: 401,019.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,505.77 : 682,505.33 = 290,556.65 : x
  2. Step 2: Convert to fraction form
    494,505.77/682,505.33 = 290,556.65/x
  3. Step 3: Cross multiply
    494,505.77x = 682,505.33 × 290,556.65
  4. Step 4: Simplify right side
    494,505.77x = 198,306,462,291.95
  5. Step 5: Solve for x
    x = 198,306,462,291.95/494,505.77
  6. Step 6: Final answer
    x = 401,019.51

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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.