Home / 1,079,490.40-1,618,198.80-839,471.20

Finding the Fourth Proportional to 1,079,490.40, 1,618,198.80 and 839,471.20

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Solution

The fourth proportional to 1,079,490.40, 1,618,198.80 and 839,471.20 is: 1,258,400.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,490.40 : 1,618,198.80 = 839,471.20 : x
  2. Step 2: Convert to fraction form
    1,079,490.40/1,618,198.80 = 839,471.20/x
  3. Step 3: Cross multiply
    1,079,490.40x = 1,618,198.80 × 839,471.20
  4. Step 4: Simplify right side
    1,079,490.40x = 1,358,431,288,474.56
  5. Step 5: Solve for x
    x = 1,358,431,288,474.56/1,079,490.40
  6. Step 6: Final answer
    x = 1,258,400.53

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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.