Home / 1,292,812.45-1,939,213.38-394,251.55

Finding the Fourth Proportional to 1,292,812.45, 1,939,213.38 and 394,251.55

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Solution

The fourth proportional to 1,292,812.45, 1,939,213.38 and 394,251.55 is: 591,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,812.45 : 1,939,213.38 = 394,251.55 : x
  2. Step 2: Convert to fraction form
    1,292,812.45/1,939,213.38 = 394,251.55/x
  3. Step 3: Cross multiply
    1,292,812.45x = 1,939,213.38 × 394,251.55
  4. Step 4: Simplify right side
    1,292,812.45x = 764,537,880,845.74
  5. Step 5: Solve for x
    x = 764,537,880,845.74/1,292,812.45
  6. Step 6: Final answer
    x = 591,375.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.