Finding the Fourth Proportional to 715,721.24, 987,707.58 and 393,444.92
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Solution
The fourth proportional to 715,721.24, 987,707.58 and 393,444.92 is: 542,960.73
Step by Step Solution
- Step 1: Write the proportion equation
715,721.24 : 987,707.58 = 393,444.92 : x - Step 2: Convert to fraction form
715,721.24/987,707.58 = 393,444.92/x - Step 3: Cross multiply
715,721.24x = 987,707.58 × 393,444.92 - Step 4: Simplify right side
715,721.24x = 388,608,529,796.49 - Step 5: Solve for x
x = 388,608,529,796.49/715,721.24 - Step 6: Final answer
x = 542,960.73
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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.