Finding the Fourth Proportional to 378,486.62, 522,304.96 and 206,405.92
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Solution
The fourth proportional to 378,486.62, 522,304.96 and 206,405.92 is: 284,836.58
Step by Step Solution
- Step 1: Write the proportion equation
378,486.62 : 522,304.96 = 206,405.92 : x - Step 2: Convert to fraction form
378,486.62/522,304.96 = 206,405.92/x - Step 3: Cross multiply
378,486.62x = 522,304.96 × 206,405.92 - Step 4: Simplify right side
378,486.62x = 107,806,836,313.24 - Step 5: Solve for x
x = 107,806,836,313.24/378,486.62 - Step 6: Final answer
x = 284,836.58
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1.5x scale
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.