Finding the Fourth Proportional to 715,803.14, 987,827.20 and 393,521.36
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Solution
The fourth proportional to 715,803.14, 987,827.20 and 393,521.36 is: 543,069.84
Step by Step Solution
- Step 1: Write the proportion equation
715,803.14 : 987,827.20 = 393,521.36 : x - Step 2: Convert to fraction form
715,803.14/987,827.20 = 393,521.36/x - Step 3: Cross multiply
715,803.14x = 987,827.20 × 393,521.36 - Step 4: Simplify right side
715,803.14x = 388,731,097,266.05 - Step 5: Solve for x
x = 388,731,097,266.05/715,803.14 - Step 6: Final answer
x = 543,069.84
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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.