Finding the Fourth Proportional to 394,624.71, 591,944.36 and 128,384.19
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Solution
The fourth proportional to 394,624.71, 591,944.36 and 128,384.19 is: 192,578.66
Step by Step Solution
- Step 1: Write the proportion equation
394,624.71 : 591,944.36 = 128,384.19 : x - Step 2: Convert to fraction form
394,624.71/591,944.36 = 128,384.19/x - Step 3: Cross multiply
394,624.71x = 591,944.36 × 128,384.19 - Step 4: Simplify right side
394,624.71x = 75,996,296,541.75 - Step 5: Solve for x
x = 75,996,296,541.75/394,624.71 - Step 6: Final answer
x = 192,578.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.