Home / 1,028,879.28-1,419,928.20-621,080.46

Finding the Fourth Proportional to 1,028,879.28, 1,419,928.20 and 621,080.46

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Solution

The fourth proportional to 1,028,879.28, 1,419,928.20 and 621,080.46 is: 857,136.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,879.28 : 1,419,928.20 = 621,080.46 : x
  2. Step 2: Convert to fraction form
    1,028,879.28/1,419,928.20 = 621,080.46/x
  3. Step 3: Cross multiply
    1,028,879.28x = 1,419,928.20 × 621,080.46
  4. Step 4: Simplify right side
    1,028,879.28x = 881,889,659,622.97
  5. Step 5: Solve for x
    x = 881,889,659,622.97/1,028,879.28
  6. Step 6: Final answer
    x = 857,136.18

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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.