Finding the Fourth Proportional to 715,574.25, 987,450.71 and 393,284.63
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Solution
The fourth proportional to 715,574.25, 987,450.71 and 393,284.63 is: 542,709.84
Step by Step Solution
- Step 1: Write the proportion equation
715,574.25 : 987,450.71 = 393,284.63 : x - Step 2: Convert to fraction form
715,574.25/987,450.71 = 393,284.63/x - Step 3: Cross multiply
715,574.25x = 987,450.71 × 393,284.63 - Step 4: Simplify right side
715,574.25x = 388,349,187,627.79 - Step 5: Solve for x
x = 388,349,187,627.79/715,574.25 - Step 6: Final answer
x = 542,709.84
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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.