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Finding the Fourth Proportional to 494,285.66, 682,143.62 and 279,445.71

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Solution

The fourth proportional to 494,285.66, 682,143.62 and 279,445.71 is: 385,651.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,285.66 : 682,143.62 = 279,445.71 : x
  2. Step 2: Convert to fraction form
    494,285.66/682,143.62 = 279,445.71/x
  3. Step 3: Cross multiply
    494,285.66x = 682,143.62 × 279,445.71
  4. Step 4: Simplify right side
    494,285.66x = 190,622,108,212.87
  5. Step 5: Solve for x
    x = 190,622,108,212.87/494,285.66
  6. Step 6: Final answer
    x = 385,651.71

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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.