Finding the Fourth Proportional to 394,608.96, 591,920.73 and 128,368.44
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Solution
The fourth proportional to 394,608.96, 591,920.73 and 128,368.44 is: 192,555.03
Step by Step Solution
- Step 1: Write the proportion equation
394,608.96 : 591,920.73 = 128,368.44 : x - Step 2: Convert to fraction form
394,608.96/591,920.73 = 128,368.44/x - Step 3: Cross multiply
394,608.96x = 591,920.73 × 128,368.44 - Step 4: Simplify right side
394,608.96x = 75,983,940,713.76 - Step 5: Solve for x
x = 75,983,940,713.76/394,608.96 - Step 6: Final answer
x = 192,555.03
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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.