Finding the Fourth Proportional to 715,934.66, 987,963.26 and 393,625.58
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Solution
The fourth proportional to 715,934.66, 987,963.26 and 393,625.58 is: 543,188.69
Step by Step Solution
- Step 1: Write the proportion equation
715,934.66 : 987,963.26 = 393,625.58 : x - Step 2: Convert to fraction form
715,934.66/987,963.26 = 393,625.58/x - Step 3: Cross multiply
715,934.66x = 987,963.26 × 393,625.58 - Step 4: Simplify right side
715,934.66x = 388,887,611,236.19 - Step 5: Solve for x
x = 388,887,611,236.19/715,934.66 - Step 6: Final answer
x = 543,188.69
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.