Finding the Fourth Proportional to 1,566,198,870.57, 2,161,311,310.53 and 861,351,108.08
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Solution
The fourth proportional to 1,566,198,870.57, 2,161,311,310.53 and 861,351,108.08 is: 1,188,640,808.78
Step by Step Solution
- Step 1: Write the proportion equation
1,566,198,870.57 : 2,161,311,310.53 = 861,351,108.08 : x - Step 2: Convert to fraction form
1,566,198,870.57/2,161,311,310.53 = 861,351,108.08/x - Step 3: Cross multiply
1,566,198,870.57x = 2,161,311,310.53 × 861,351,108.08 - Step 4: Simplify right side
1,566,198,870.57x = 1,861,647,892,220,046,080 - Step 5: Solve for x
x = 1,861,647,892,220,046,080/1,566,198,870.57 - Step 6: Final answer
x = 1,188,640,808.78
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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.