Finding the Fourth Proportional to 678,203.26, 936,049.63 and 448,765.09
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Solution
The fourth proportional to 678,203.26, 936,049.63 and 448,765.09 is: 619,381.27
Step by Step Solution
- Step 1: Write the proportion equation
678,203.26 : 936,049.63 = 448,765.09 : x - Step 2: Convert to fraction form
678,203.26/936,049.63 = 448,765.09/x - Step 3: Cross multiply
678,203.26x = 936,049.63 × 448,765.09 - Step 4: Simplify right side
678,203.26x = 420,066,391,771.17 - Step 5: Solve for x
x = 420,066,391,771.17/678,203.26 - Step 6: Final answer
x = 619,381.27
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.