Finding the Fourth Proportional to 1,391,008,091.80, 2,086,512,137.70 and 982,861,403.80
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Solution
The fourth proportional to 1,391,008,091.80, 2,086,512,137.70 and 982,861,403.80 is: 1,474,292,105.70
Step by Step Solution
- Step 1: Write the proportion equation
1,391,008,091.80 : 2,086,512,137.70 = 982,861,403.80 : x - Step 2: Convert to fraction form
1,391,008,091.80/2,086,512,137.70 = 982,861,403.80/x - Step 3: Cross multiply
1,391,008,091.80x = 2,086,512,137.70 × 982,861,403.80 - Step 4: Simplify right side
1,391,008,091.80x = 2,050,752,248,705,560,832 - Step 5: Solve for x
x = 2,050,752,248,705,560,832/1,391,008,091.80 - Step 6: Final answer
x = 1,474,292,105.70
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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.