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Finding the Fourth Proportional to 494,431.74, 682,329.15 and 303,331.68

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Solution

The fourth proportional to 494,431.74, 682,329.15 and 303,331.68 is: 418,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,431.74 : 682,329.15 = 303,331.68 : x
  2. Step 2: Convert to fraction form
    494,431.74/682,329.15 = 303,331.68/x
  3. Step 3: Cross multiply
    494,431.74x = 682,329.15 × 303,331.68
  4. Step 4: Simplify right side
    494,431.74x = 206,972,047,382.47
  5. Step 5: Solve for x
    x = 206,972,047,382.47/494,431.74
  6. Step 6: Final answer
    x = 418,605.91

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1.5x scale

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.