Finding the Fourth Proportional to 394,893.09, 592,338.92 and 128,653.29
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Solution
The fourth proportional to 394,893.09, 592,338.92 and 128,653.29 is: 192,979.70
Step by Step Solution
- Step 1: Write the proportion equation
394,893.09 : 592,338.92 = 128,653.29 : x - Step 2: Convert to fraction form
394,893.09/592,338.92 = 128,653.29/x - Step 3: Cross multiply
394,893.09x = 592,338.92 × 128,653.29 - Step 4: Simplify right side
394,893.09x = 76,206,350,209.78 - Step 5: Solve for x
x = 76,206,350,209.78/394,893.09 - Step 6: Final answer
x = 192,979.70
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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.