Finding the Fourth Proportional to 711,161.76, 981,463.68 and 405,331.68
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Solution
The fourth proportional to 711,161.76, 981,463.68 and 405,331.68 is: 559,392.17
Step by Step Solution
- Step 1: Write the proportion equation
711,161.76 : 981,463.68 = 405,331.68 : x - Step 2: Convert to fraction form
711,161.76/981,463.68 = 405,331.68/x - Step 3: Cross multiply
711,161.76x = 981,463.68 × 405,331.68 - Step 4: Simplify right side
711,161.76x = 397,818,322,273.38 - Step 5: Solve for x
x = 397,818,322,273.38/711,161.76 - Step 6: Final answer
x = 559,392.17
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1.5x scale
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.