Finding the Fourth Proportional to 1,431,786.20, 2,147,630.70 and 366,838.70
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Solution
The fourth proportional to 1,431,786.20, 2,147,630.70 and 366,838.70 is: 550,245.60
Step by Step Solution
- Step 1: Write the proportion equation
1,431,786.20 : 2,147,630.70 = 366,838.70 : x - Step 2: Convert to fraction form
1,431,786.20/2,147,630.70 = 366,838.70/x - Step 3: Cross multiply
1,431,786.20x = 2,147,630.70 × 366,838.70 - Step 4: Simplify right side
1,431,786.20x = 787,834,054,068.09 - Step 5: Solve for x
x = 787,834,054,068.09/1,431,786.20 - Step 6: Final answer
x = 550,245.60
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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.