Finding the Fourth Proportional to 811,198.43, 1,215,939.58 and 305,540.63
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Solution
The fourth proportional to 811,198.43, 1,215,939.58 and 305,540.63 is: 457,987.75
Step by Step Solution
- Step 1: Write the proportion equation
811,198.43 : 1,215,939.58 = 305,540.63 : x - Step 2: Convert to fraction form
811,198.43/1,215,939.58 = 305,540.63/x - Step 3: Cross multiply
811,198.43x = 1,215,939.58 × 305,540.63 - Step 4: Simplify right side
811,198.43x = 371,518,945,315.14 - Step 5: Solve for x
x = 371,518,945,315.14/811,198.43 - Step 6: Final answer
x = 457,987.75
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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.