Finding the Fourth Proportional to 857,717.38, 1,286,763.18 and 325,243.63
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Solution
The fourth proportional to 857,717.38, 1,286,763.18 and 325,243.63 is: 487,936.40
Step by Step Solution
- Step 1: Write the proportion equation
857,717.38 : 1,286,763.18 = 325,243.63 : x - Step 2: Convert to fraction form
857,717.38/1,286,763.18 = 325,243.63/x - Step 3: Cross multiply
857,717.38x = 1,286,763.18 × 325,243.63 - Step 4: Simplify right side
857,717.38x = 418,511,527,613.54 - Step 5: Solve for x
x = 418,511,527,613.54/857,717.38 - Step 6: Final answer
x = 487,936.40
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1.5x scale
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.