Finding the Fourth Proportional to 715,584.40, 987,524.58 and 393,302.68
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Solution
The fourth proportional to 715,584.40, 987,524.58 and 393,302.68 is: 542,767.65
Step by Step Solution
- Step 1: Write the proportion equation
715,584.40 : 987,524.58 = 393,302.68 : x - Step 2: Convert to fraction form
715,584.40/987,524.58 = 393,302.68/x - Step 3: Cross multiply
715,584.40x = 987,524.58 × 393,302.68 - Step 4: Simplify right side
715,584.40x = 388,396,063,879.87 - Step 5: Solve for x
x = 388,396,063,879.87/715,584.40 - Step 6: Final answer
x = 542,767.65
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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.