Home / 885,407.40-1,321,205.46-789,981.60

Finding the Fourth Proportional to 885,407.40, 1,321,205.46 and 789,981.60

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Solution

The fourth proportional to 885,407.40, 1,321,205.46 and 789,981.60 is: 1,178,811.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,407.40 : 1,321,205.46 = 789,981.60 : x
  2. Step 2: Convert to fraction form
    885,407.40/1,321,205.46 = 789,981.60/x
  3. Step 3: Cross multiply
    885,407.40x = 1,321,205.46 × 789,981.60
  4. Step 4: Simplify right side
    885,407.40x = 1,043,728,003,219.54
  5. Step 5: Solve for x
    x = 1,043,728,003,219.54/885,407.40
  6. Step 6: Final answer
    x = 1,178,811.02

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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.