Finding the Fourth Proportional to 710,986.14, 981,184.86 and 388,689.84
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Solution
The fourth proportional to 710,986.14, 981,184.86 and 388,689.84 is: 536,405.09
Step by Step Solution
- Step 1: Write the proportion equation
710,986.14 : 981,184.86 = 388,689.84 : x - Step 2: Convert to fraction form
710,986.14/981,184.86 = 388,689.84/x - Step 3: Cross multiply
710,986.14x = 981,184.86 × 388,689.84 - Step 4: Simplify right side
710,986.14x = 381,376,586,243.82 - Step 5: Solve for x
x = 381,376,586,243.82/710,986.14 - Step 6: Final answer
x = 536,405.09
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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.