Finding the Fourth Proportional to 711,042.06, 981,238.06 and 388,752.18
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Solution
The fourth proportional to 711,042.06, 981,238.06 and 388,752.18 is: 536,478.02
Step by Step Solution
- Step 1: Write the proportion equation
711,042.06 : 981,238.06 = 388,752.18 : x - Step 2: Convert to fraction form
711,042.06/981,238.06 = 388,752.18/x - Step 3: Cross multiply
711,042.06x = 981,238.06 × 388,752.18 - Step 4: Simplify right side
711,042.06x = 381,458,434,923.97 - Step 5: Solve for x
x = 381,458,434,923.97/711,042.06 - Step 6: Final answer
x = 536,478.02
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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.