Home / 1,079,986.40-1,618,942.80-839,967.20

Finding the Fourth Proportional to 1,079,986.40, 1,618,942.80 and 839,967.20

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Solution

The fourth proportional to 1,079,986.40, 1,618,942.80 and 839,967.20 is: 1,259,144.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,986.40 : 1,618,942.80 = 839,967.20 : x
  2. Step 2: Convert to fraction form
    1,079,986.40/1,618,942.80 = 839,967.20/x
  3. Step 3: Cross multiply
    1,079,986.40x = 1,618,942.80 × 839,967.20
  4. Step 4: Simplify right side
    1,079,986.40x = 1,359,858,850,676.16
  5. Step 5: Solve for x
    x = 1,359,858,850,676.16/1,079,986.40
  6. Step 6: Final answer
    x = 1,259,144.42

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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.