Finding the Fourth Proportional to 1,311,018,778.46, 1,809,207,859.83 and 746,504,120.09
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Solution
The fourth proportional to 1,311,018,778.46, 1,809,207,859.83 and 746,504,120.09 is: 1,030,176,793.54
Step by Step Solution
- Step 1: Write the proportion equation
1,311,018,778.46 : 1,809,207,859.83 = 746,504,120.09 : x - Step 2: Convert to fraction form
1,311,018,778.46/1,809,207,859.83 = 746,504,120.09/x - Step 3: Cross multiply
1,311,018,778.46x = 1,809,207,859.83 × 746,504,120.09 - Step 4: Simplify right side
1,311,018,778.46x = 1,350,581,121,462,306,304 - Step 5: Solve for x
x = 1,350,581,121,462,306,304/1,311,018,778.46 - Step 6: Final answer
x = 1,030,176,793.54
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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.