Finding the Fourth Proportional to 2,157,147.92, 2,976,861.84 and 1,190,277.92
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Solution
The fourth proportional to 2,157,147.92, 2,976,861.84 and 1,190,277.92 is: 1,642,582.27
Step by Step Solution
- Step 1: Write the proportion equation
2,157,147.92 : 2,976,861.84 = 1,190,277.92 : x - Step 2: Convert to fraction form
2,157,147.92/2,976,861.84 = 1,190,277.92/x - Step 3: Cross multiply
2,157,147.92x = 2,976,861.84 × 1,190,277.92 - Step 4: Simplify right side
2,157,147.92x = 3,543,292,919,042.57 - Step 5: Solve for x
x = 3,543,292,919,042.57/2,157,147.92 - Step 6: Final answer
x = 1,642,582.27
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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.