Finding the Fourth Proportional to 394,717.71, 592,083.90 and 128,477.19
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Solution
The fourth proportional to 394,717.71, 592,083.90 and 128,477.19 is: 192,718.17
Step by Step Solution
- Step 1: Write the proportion equation
394,717.71 : 592,083.90 = 128,477.19 : x - Step 2: Convert to fraction form
394,717.71/592,083.90 = 128,477.19/x - Step 3: Cross multiply
394,717.71x = 592,083.90 × 128,477.19 - Step 4: Simplify right side
394,717.71x = 76,069,275,716.24 - Step 5: Solve for x
x = 76,069,275,716.24/394,717.71 - Step 6: Final answer
x = 192,718.17
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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.