Finding the Fourth Proportional to 2,236,816.20, 3,086,841.52 and 1,218,220.14
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Solution
The fourth proportional to 2,236,816.20, 3,086,841.52 and 1,218,220.14 is: 1,681,162.94
Step by Step Solution
- Step 1: Write the proportion equation
2,236,816.20 : 3,086,841.52 = 1,218,220.14 : x - Step 2: Convert to fraction form
2,236,816.20/3,086,841.52 = 1,218,220.14/x - Step 3: Cross multiply
2,236,816.20x = 3,086,841.52 × 1,218,220.14 - Step 4: Simplify right side
2,236,816.20x = 3,760,452,508,652.21 - Step 5: Solve for x
x = 3,760,452,508,652.21/2,236,816.20 - Step 6: Final answer
x = 1,681,162.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.