Finding the Fourth Proportional to 659,539.80, 987,341.40 and 393,163.20
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Solution
The fourth proportional to 659,539.80, 987,341.40 and 393,163.20 is: 588,571.46
Step by Step Solution
- Step 1: Write the proportion equation
659,539.80 : 987,341.40 = 393,163.20 : x - Step 2: Convert to fraction form
659,539.80/987,341.40 = 393,163.20/x - Step 3: Cross multiply
659,539.80x = 987,341.40 × 393,163.20 - Step 4: Simplify right side
659,539.80x = 388,186,304,316.48 - Step 5: Solve for x
x = 388,186,304,316.48/659,539.80 - Step 6: Final answer
x = 588,571.46
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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.