Home / 885,406.40-1,321,203.97-789,980.60

Finding the Fourth Proportional to 885,406.40, 1,321,203.97 and 789,980.60

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Solution

The fourth proportional to 885,406.40, 1,321,203.97 and 789,980.60 is: 1,178,809.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,406.40 : 1,321,203.97 = 789,980.60 : x
  2. Step 2: Convert to fraction form
    885,406.40/1,321,203.97 = 789,980.60/x
  3. Step 3: Cross multiply
    885,406.40x = 1,321,203.97 × 789,980.60
  4. Step 4: Simplify right side
    885,406.40x = 1,043,725,504,942.98
  5. Step 5: Solve for x
    x = 1,043,725,504,942.98/885,406.40
  6. Step 6: Final answer
    x = 1,178,809.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.