Finding the Fourth Proportional to 5,431,314.70, 8,147,956.20 and 2,728,838.80
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Solution
The fourth proportional to 5,431,314.70, 8,147,956.20 and 2,728,838.80 is: 4,093,752.66
Step by Step Solution
- Step 1: Write the proportion equation
5,431,314.70 : 8,147,956.20 = 2,728,838.80 : x - Step 2: Convert to fraction form
5,431,314.70/8,147,956.20 = 2,728,838.80/x - Step 3: Cross multiply
5,431,314.70x = 8,147,956.20 × 2,728,838.80 - Step 4: Simplify right side
5,431,314.70x = 22,234,459,019,260.56 - Step 5: Solve for x
x = 22,234,459,019,260.56/5,431,314.70 - Step 6: Final answer
x = 4,093,752.66
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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.