Finding the Fourth Proportional to 678,708.26, 936,625.11 and 372,791.81
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Solution
The fourth proportional to 678,708.26, 936,625.11 and 372,791.81 is: 514,456.94
Step by Step Solution
- Step 1: Write the proportion equation
678,708.26 : 936,625.11 = 372,791.81 : x - Step 2: Convert to fraction form
678,708.26/936,625.11 = 372,791.81/x - Step 3: Cross multiply
678,708.26x = 936,625.11 × 372,791.81 - Step 4: Simplify right side
678,708.26x = 349,166,170,991.94 - Step 5: Solve for x
x = 349,166,170,991.94/678,708.26 - Step 6: Final answer
x = 514,456.94
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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.