Finding the Third Proportional to 315,778 and 678,404
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Solution
The third proportional to 315,778 and 678,404 is: 1,457,454.25
Step by Step Solution
- Step 1: Write the proportion equation
315,778 : 678,404 = 678,404 : x - Step 2: Convert to fraction form
315,778/678,404 = 678,404/x - Step 3: Cross multiply
315,778x = 678,404 × 678,404 - Step 4: Simplify right side
315,778x = 460,231,987,216 - Step 5: Solve for x
x = 460,231,987,216/315,778 - Step 6: Final answer
x = 1,457,454.25
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Why These Related Problems?
These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.