Finding the Fourth Proportional to 1,992,863,020.80, 2,989,294,531.20 and 957,474,235.20
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Solution
The fourth proportional to 1,992,863,020.80, 2,989,294,531.20 and 957,474,235.20 is: 1,436,211,352.80
Step by Step Solution
- Step 1: Write the proportion equation
1,992,863,020.80 : 2,989,294,531.20 = 957,474,235.20 : x - Step 2: Convert to fraction form
1,992,863,020.80/2,989,294,531.20 = 957,474,235.20/x - Step 3: Cross multiply
1,992,863,020.80x = 2,989,294,531.20 × 957,474,235.20 - Step 4: Simplify right side
1,992,863,020.80x = 2,862,172,495,048,262,656 - Step 5: Solve for x
x = 2,862,172,495,048,262,656/1,992,863,020.80 - Step 6: Final answer
x = 1,436,211,352.80
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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.