Finding the Fourth Proportional to 2,138,963.20, 3,208,326.72 and 718,872.64
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Solution
The fourth proportional to 2,138,963.20, 3,208,326.72 and 718,872.64 is: 1,078,269.28
Step by Step Solution
- Step 1: Write the proportion equation
2,138,963.20 : 3,208,326.72 = 718,872.64 : x - Step 2: Convert to fraction form
2,138,963.20/3,208,326.72 = 718,872.64/x - Step 3: Cross multiply
2,138,963.20x = 3,208,326.72 × 718,872.64 - Step 4: Simplify right side
2,138,963.20x = 2,306,378,299,188.94 - Step 5: Solve for x
x = 2,306,378,299,188.94/2,138,963.20 - Step 6: Final answer
x = 1,078,269.28
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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.