Finding the Fourth Proportional to 442,858,738.20, 664,288,107.30 and 320,414,731.80
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Solution
The fourth proportional to 442,858,738.20, 664,288,107.30 and 320,414,731.80 is: 480,622,097.70
Step by Step Solution
- Step 1: Write the proportion equation
442,858,738.20 : 664,288,107.30 = 320,414,731.80 : x - Step 2: Convert to fraction form
442,858,738.20/664,288,107.30 = 320,414,731.80/x - Step 3: Cross multiply
442,858,738.20x = 664,288,107.30 × 320,414,731.80 - Step 4: Simplify right side
442,858,738.20x = 212,847,695,738,459,104 - Step 5: Solve for x
x = 212,847,695,738,459,104/442,858,738.20 - Step 6: Final answer
x = 480,622,097.70
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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.