Finding the Fourth Proportional to 2,198,672.40, 3,298,786.20 and 2,120,912.40
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Solution
The fourth proportional to 2,198,672.40, 3,298,786.20 and 2,120,912.40 is: 3,182,118.70
Step by Step Solution
- Step 1: Write the proportion equation
2,198,672.40 : 3,298,786.20 = 2,120,912.40 : x - Step 2: Convert to fraction form
2,198,672.40/3,298,786.20 = 2,120,912.40/x - Step 3: Cross multiply
2,198,672.40x = 3,298,786.20 × 2,120,912.40 - Step 4: Simplify right side
2,198,672.40x = 6,996,436,556,528.88 - Step 5: Solve for x
x = 6,996,436,556,528.88/2,198,672.40 - Step 6: Final answer
x = 3,182,118.70
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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.