Finding the Fourth Proportional to 1,992,919,091.40, 2,990,228,942.70 and 957,246,870.60
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Solution
The fourth proportional to 1,992,919,091.40, 2,990,228,942.70 and 957,246,870.60 is: 1,436,278,728.09
Step by Step Solution
- Step 1: Write the proportion equation
1,992,919,091.40 : 2,990,228,942.70 = 957,246,870.60 : x - Step 2: Convert to fraction form
1,992,919,091.40/2,990,228,942.70 = 957,246,870.60/x - Step 3: Cross multiply
1,992,919,091.40x = 2,990,228,942.70 × 957,246,870.60 - Step 4: Simplify right side
1,992,919,091.40x = 2,862,387,297,777,121,792 - Step 5: Solve for x
x = 2,862,387,297,777,121,792/1,992,919,091.40 - Step 6: Final answer
x = 1,436,278,728.09
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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.