Home / 1,391,561.76-2,087,361.84-394,288.80

Finding the Fourth Proportional to 1,391,561.76, 2,087,361.84 and 394,288.80

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Solution

The fourth proportional to 1,391,561.76, 2,087,361.84 and 394,288.80 is: 591,438.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,561.76 : 2,087,361.84 = 394,288.80 : x
  2. Step 2: Convert to fraction form
    1,391,561.76/2,087,361.84 = 394,288.80/x
  3. Step 3: Cross multiply
    1,391,561.76x = 2,087,361.84 × 394,288.80
  4. Step 4: Simplify right side
    1,391,561.76x = 823,023,395,059.39
  5. Step 5: Solve for x
    x = 823,023,395,059.39/1,391,561.76
  6. Step 6: Final answer
    x = 591,438.64

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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.