Finding the Fourth Proportional to 2,138,821.70, 3,208,232.55 and 718,405.70
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Solution
The fourth proportional to 2,138,821.70, 3,208,232.55 and 718,405.70 is: 1,077,608.55
Step by Step Solution
- Step 1: Write the proportion equation
2,138,821.70 : 3,208,232.55 = 718,405.70 : x - Step 2: Convert to fraction form
2,138,821.70/3,208,232.55 = 718,405.70/x - Step 3: Cross multiply
2,138,821.70x = 3,208,232.55 × 718,405.70 - Step 4: Simplify right side
2,138,821.70x = 2,304,812,550,845.53 - Step 5: Solve for x
x = 2,304,812,550,845.53/2,138,821.70 - Step 6: Final answer
x = 1,077,608.55
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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.