Finding the Fourth Proportional to 715,464.68, 987,321.36 and 393,174.68
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Solution
The fourth proportional to 715,464.68, 987,321.36 and 393,174.68 is: 542,570.12
Step by Step Solution
- Step 1: Write the proportion equation
715,464.68 : 987,321.36 = 393,174.68 : x - Step 2: Convert to fraction form
715,464.68/987,321.36 = 393,174.68/x - Step 3: Cross multiply
715,464.68x = 987,321.36 × 393,174.68 - Step 4: Simplify right side
715,464.68x = 388,189,759,775.17 - Step 5: Solve for x
x = 388,189,759,775.17/715,464.68 - Step 6: Final answer
x = 542,570.12
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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.