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Finding the Fourth Proportional to 494,466.77, 682,451.54 and 290,517.63

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Solution

The fourth proportional to 494,466.77, 682,451.54 and 290,517.63 is: 400,965.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,466.77 : 682,451.54 = 290,517.63 : x
  2. Step 2: Convert to fraction form
    494,466.77/682,451.54 = 290,517.63/x
  3. Step 3: Cross multiply
    494,466.77x = 682,451.54 × 290,517.63
  4. Step 4: Simplify right side
    494,466.77x = 198,264,202,538.06
  5. Step 5: Solve for x
    x = 198,264,202,538.06/494,466.77
  6. Step 6: Final answer
    x = 400,965.68

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Double scale
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Similar ratio
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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.