Finding the Fourth Proportional to 398,582,787.20, 597,968,659.20 and 204,524,153.60
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Solution
The fourth proportional to 398,582,787.20, 597,968,659.20 and 204,524,153.60 is: 306,834,709.95
Step by Step Solution
- Step 1: Write the proportion equation
398,582,787.20 : 597,968,659.20 = 204,524,153.60 : x - Step 2: Convert to fraction form
398,582,787.20/597,968,659.20 = 204,524,153.60/x - Step 3: Cross multiply
398,582,787.20x = 597,968,659.20 × 204,524,153.60 - Step 4: Simplify right side
398,582,787.20x = 122,299,033,902,206,864 - Step 5: Solve for x
x = 122,299,033,902,206,864/398,582,787.20 - Step 6: Final answer
x = 306,834,709.95
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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.