Finding the Fourth Proportional to 379,481.36, 523,679.46 and 209,711.84
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Solution
The fourth proportional to 379,481.36, 523,679.46 and 209,711.84 is: 289,399.68
Step by Step Solution
- Step 1: Write the proportion equation
379,481.36 : 523,679.46 = 209,711.84 : x - Step 2: Convert to fraction form
379,481.36/523,679.46 = 209,711.84/x - Step 3: Cross multiply
379,481.36x = 523,679.46 × 209,711.84 - Step 4: Simplify right side
379,481.36x = 109,821,783,126.81 - Step 5: Solve for x
x = 109,821,783,126.81/379,481.36 - Step 6: Final answer
x = 289,399.68
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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.