Finding the Fourth Proportional to 394,879.62, 592,382.61 and 128,619.66
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Solution
The fourth proportional to 394,879.62, 592,382.61 and 128,619.66 is: 192,950.07
Step by Step Solution
- Step 1: Write the proportion equation
394,879.62 : 592,382.61 = 128,619.66 : x - Step 2: Convert to fraction form
394,879.62/592,382.61 = 128,619.66/x - Step 3: Cross multiply
394,879.62x = 592,382.61 × 128,619.66 - Step 4: Simplify right side
394,879.62x = 76,192,049,888.11 - Step 5: Solve for x
x = 76,192,049,888.11/394,879.62 - Step 6: Final answer
x = 192,950.07
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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.