Finding the Fourth Proportional to 715,339.97, 987,186.96 and 388,653.09
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Solution
The fourth proportional to 715,339.97, 987,186.96 and 388,653.09 is: 536,350.94
Step by Step Solution
- Step 1: Write the proportion equation
715,339.97 : 987,186.96 = 388,653.09 : x - Step 2: Convert to fraction form
715,339.97/987,186.96 = 388,653.09/x - Step 3: Cross multiply
715,339.97x = 987,186.96 × 388,653.09 - Step 4: Simplify right side
715,339.97x = 383,673,264,514.08 - Step 5: Solve for x
x = 383,673,264,514.08/715,339.97 - Step 6: Final answer
x = 536,350.94
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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.