Finding the Fourth Proportional to 711,223.67, 981,479.23 and 405,318.26
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Solution
The fourth proportional to 711,223.67, 981,479.23 and 405,318.26 is: 559,333.82
Step by Step Solution
- Step 1: Write the proportion equation
711,223.67 : 981,479.23 = 405,318.26 : x - Step 2: Convert to fraction form
711,223.67/981,479.23 = 405,318.26/x - Step 3: Cross multiply
711,223.67x = 981,479.23 × 405,318.26 - Step 4: Simplify right side
711,223.67x = 397,811,455,170.14 - Step 5: Solve for x
x = 397,811,455,170.14/711,223.67 - Step 6: Final answer
x = 559,333.82
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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.