Finding the Third Proportional to 311,939.44 and 638,629.31
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Solution
The third proportional to 311,939.44 and 638,629.31 is: 1,307,456.99
Step by Step Solution
- Step 1: Write the proportion equation
311,939.44 : 638,629.31 = 638,629.31 : x - Step 2: Convert to fraction form
311,939.44/638,629.31 = 638,629.31/x - Step 3: Cross multiply
311,939.44x = 638,629.31 × 638,629.31 - Step 4: Simplify right side
311,939.44x = 407,847,398,784.22 - Step 5: Solve for x
x = 407,847,398,784.22/311,939.44 - Step 6: Final answer
x = 1,307,456.99
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These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.