Finding the Fourth Proportional to 398,405,902.20, 597,720,827.70 and 193,940,647.80
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Solution
The fourth proportional to 398,405,902.20, 597,720,827.70 and 193,940,647.80 is: 290,965,479.90
Step by Step Solution
- Step 1: Write the proportion equation
398,405,902.20 : 597,720,827.70 = 193,940,647.80 : x - Step 2: Convert to fraction form
398,405,902.20/597,720,827.70 = 193,940,647.80/x - Step 3: Cross multiply
398,405,902.20x = 597,720,827.70 × 193,940,647.80 - Step 4: Simplify right side
398,405,902.20x = 115,922,364,527,690,208 - Step 5: Solve for x
x = 115,922,364,527,690,208/398,405,902.20 - Step 6: Final answer
x = 290,965,479.90
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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.