Home / 1,289,062.80-1,931,261.40-789,843.60

Finding the Fourth Proportional to 1,289,062.80, 1,931,261.40 and 789,843.60

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Solution

The fourth proportional to 1,289,062.80, 1,931,261.40 and 789,843.60 is: 1,183,336.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,062.80 : 1,931,261.40 = 789,843.60 : x
  2. Step 2: Convert to fraction form
    1,289,062.80/1,931,261.40 = 789,843.60/x
  3. Step 3: Cross multiply
    1,289,062.80x = 1,931,261.40 × 789,843.60
  4. Step 4: Simplify right side
    1,289,062.80x = 1,525,394,456,717.04
  5. Step 5: Solve for x
    x = 1,525,394,456,717.04/1,289,062.80
  6. Step 6: Final answer
    x = 1,183,336.03

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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.