Finding the Fourth Proportional to 388,476,716.40, 582,715,074.60 and 386,209,234.80
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Solution
The fourth proportional to 388,476,716.40, 582,715,074.60 and 386,209,234.80 is: 579,313,852.20
Step by Step Solution
- Step 1: Write the proportion equation
388,476,716.40 : 582,715,074.60 = 386,209,234.80 : x - Step 2: Convert to fraction form
388,476,716.40/582,715,074.60 = 386,209,234.80/x - Step 3: Cross multiply
388,476,716.40x = 582,715,074.60 × 386,209,234.80 - Step 4: Simplify right side
388,476,716.40x = 225,049,943,067,690,944 - Step 5: Solve for x
x = 225,049,943,067,690,944/388,476,716.40 - Step 6: Final answer
x = 579,313,852.20
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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.