Home / 1,292,978.76-1,939,469.64-394,372.92

Finding the Fourth Proportional to 1,292,978.76, 1,939,469.64 and 394,372.92

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Solution

The fourth proportional to 1,292,978.76, 1,939,469.64 and 394,372.92 is: 591,559.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,978.76 : 1,939,469.64 = 394,372.92 : x
  2. Step 2: Convert to fraction form
    1,292,978.76/1,939,469.64 = 394,372.92/x
  3. Step 3: Cross multiply
    1,292,978.76x = 1,939,469.64 × 394,372.92
  4. Step 4: Simplify right side
    1,292,978.76x = 764,874,305,178.15
  5. Step 5: Solve for x
    x = 764,874,305,178.15/1,292,978.76
  6. Step 6: Final answer
    x = 591,559.84

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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.