Finding the Fourth Proportional to 1,992,919,112.40, 2,990,228,974.20 and 957,246,891.60
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Solution
The fourth proportional to 1,992,919,112.40, 2,990,228,974.20 and 957,246,891.60 is: 1,436,278,759.59
Step by Step Solution
- Step 1: Write the proportion equation
1,992,919,112.40 : 2,990,228,974.20 = 957,246,891.60 : x - Step 2: Convert to fraction form
1,992,919,112.40/2,990,228,974.20 = 957,246,891.60/x - Step 3: Cross multiply
1,992,919,112.40x = 2,990,228,974.20 × 957,246,891.60 - Step 4: Simplify right side
1,992,919,112.40x = 2,862,387,390,725,206,528 - Step 5: Solve for x
x = 2,862,387,390,725,206,528/1,992,919,112.40 - Step 6: Final answer
x = 1,436,278,759.59
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.