Finding the Fourth Proportional to 442,870,469.80, 664,305,704.70 and 328,079,213.80
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Solution
The fourth proportional to 442,870,469.80, 664,305,704.70 and 328,079,213.80 is: 492,118,820.70
Step by Step Solution
- Step 1: Write the proportion equation
442,870,469.80 : 664,305,704.70 = 328,079,213.80 : x - Step 2: Convert to fraction form
442,870,469.80/664,305,704.70 = 328,079,213.80/x - Step 3: Cross multiply
442,870,469.80x = 664,305,704.70 × 328,079,213.80 - Step 4: Simplify right side
442,870,469.80x = 217,944,893,320,830,976 - Step 5: Solve for x
x = 217,944,893,320,830,976/442,870,469.80 - Step 6: Final answer
x = 492,118,820.70
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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.