Finding the Fourth Proportional to 715,656.54, 987,583.99 and 393,365.64
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Solution
The fourth proportional to 715,656.54, 987,583.99 and 393,365.64 is: 542,832.47
Step by Step Solution
- Step 1: Write the proportion equation
715,656.54 : 987,583.99 = 393,365.64 : x - Step 2: Convert to fraction form
715,656.54/987,583.99 = 393,365.64/x - Step 3: Cross multiply
715,656.54x = 987,583.99 × 393,365.64 - Step 4: Simplify right side
715,656.54x = 388,481,608,280.10 - Step 5: Solve for x
x = 388,481,608,280.10/715,656.54 - Step 6: Final answer
x = 542,832.47
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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.