Finding the Fourth Proportional to 715,591.40, 987,534.24 and 393,309.68
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Solution
The fourth proportional to 715,591.40, 987,534.24 and 393,309.68 is: 542,777.31
Step by Step Solution
- Step 1: Write the proportion equation
715,591.40 : 987,534.24 = 393,309.68 : x - Step 2: Convert to fraction form
715,591.40/987,534.24 = 393,309.68/x - Step 3: Cross multiply
715,591.40x = 987,534.24 × 393,309.68 - Step 4: Simplify right side
715,591.40x = 388,406,775,923.44 - Step 5: Solve for x
x = 388,406,775,923.44/715,591.40 - Step 6: Final answer
x = 542,777.31
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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.