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Finding the Fourth Proportional to 494,465.40, 682,375.68 and 279,637.56

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Solution

The fourth proportional to 494,465.40, 682,375.68 and 279,637.56 is: 385,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,465.40 : 682,375.68 = 279,637.56 : x
  2. Step 2: Convert to fraction form
    494,465.40/682,375.68 = 279,637.56/x
  3. Step 3: Cross multiply
    494,465.40x = 682,375.68 × 279,637.56
  4. Step 4: Simplify right side
    494,465.40x = 190,817,870,158.54
  5. Step 5: Solve for x
    x = 190,817,870,158.54/494,465.40
  6. Step 6: Final answer
    x = 385,907.43

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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.