Finding the Fourth Proportional to 715,462.68, 987,318.60 and 393,172.68
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Solution
The fourth proportional to 715,462.68, 987,318.60 and 393,172.68 is: 542,567.36
Step by Step Solution
- Step 1: Write the proportion equation
715,462.68 : 987,318.60 = 393,172.68 : x - Step 2: Convert to fraction form
715,462.68/987,318.60 = 393,172.68/x - Step 3: Cross multiply
715,462.68x = 987,318.60 × 393,172.68 - Step 4: Simplify right side
715,462.68x = 388,186,699,975.85 - Step 5: Solve for x
x = 388,186,699,975.85/715,462.68 - Step 6: Final answer
x = 542,567.36
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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.