Finding the Fourth Proportional to 810,396.99, 1,215,647.33 and 311,760.99
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Solution
The fourth proportional to 810,396.99, 1,215,647.33 and 311,760.99 is: 467,661.43
Step by Step Solution
- Step 1: Write the proportion equation
810,396.99 : 1,215,647.33 = 311,760.99 : x - Step 2: Convert to fraction form
810,396.99/1,215,647.33 = 311,760.99/x - Step 3: Cross multiply
810,396.99x = 1,215,647.33 × 311,760.99 - Step 4: Simplify right side
810,396.99x = 378,991,413,532.85 - Step 5: Solve for x
x = 378,991,413,532.85/810,396.99 - Step 6: Final answer
x = 467,661.43
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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.