Finding the Fourth Proportional to 810,325.82, 1,215,489.65 and 211,286.48
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Solution
The fourth proportional to 810,325.82, 1,215,489.65 and 211,286.48 is: 316,929.95
Step by Step Solution
- Step 1: Write the proportion equation
810,325.82 : 1,215,489.65 = 211,286.48 : x - Step 2: Convert to fraction form
810,325.82/1,215,489.65 = 211,286.48/x - Step 3: Cross multiply
810,325.82x = 1,215,489.65 × 211,286.48 - Step 4: Simplify right side
810,325.82x = 256,816,522,491.05 - Step 5: Solve for x
x = 256,816,522,491.05/810,325.82 - Step 6: Final answer
x = 316,929.95
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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.