Finding the Fourth Proportional to 489,940,170.38, 676,115,396.06 and 266,921,157.70
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Solution
The fourth proportional to 489,940,170.38, 676,115,396.06 and 266,921,157.70 is: 368,350,086.74
Step by Step Solution
- Step 1: Write the proportion equation
489,940,170.38 : 676,115,396.06 = 266,921,157.70 : x - Step 2: Convert to fraction form
489,940,170.38/676,115,396.06 = 266,921,157.70/x - Step 3: Cross multiply
489,940,170.38x = 676,115,396.06 × 266,921,157.70 - Step 4: Simplify right side
489,940,170.38x = 180,469,504,255,129,184 - Step 5: Solve for x
x = 180,469,504,255,129,184/489,940,170.38 - Step 6: Final answer
x = 368,350,086.74
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.