Finding the Fourth Proportional to 711,631.08, 981,921.06 and 405,694.44
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Solution
The fourth proportional to 711,631.08, 981,921.06 and 405,694.44 is: 559,784.31
Step by Step Solution
- Step 1: Write the proportion equation
711,631.08 : 981,921.06 = 405,694.44 : x - Step 2: Convert to fraction form
711,631.08/981,921.06 = 405,694.44/x - Step 3: Cross multiply
711,631.08x = 981,921.06 × 405,694.44 - Step 4: Simplify right side
711,631.08x = 398,359,914,560.91 - Step 5: Solve for x
x = 398,359,914,560.91/711,631.08 - Step 6: Final answer
x = 559,784.31
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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.