Finding the Fourth Proportional to 1,566,198,902.68, 2,161,311,355.12 and 861,351,140.46
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Solution
The fourth proportional to 1,566,198,902.68, 2,161,311,355.12 and 861,351,140.46 is: 1,188,640,853.62
Step by Step Solution
- Step 1: Write the proportion equation
1,566,198,902.68 : 2,161,311,355.12 = 861,351,140.46 : x - Step 2: Convert to fraction form
1,566,198,902.68/2,161,311,355.12 = 861,351,140.46/x - Step 3: Cross multiply
1,566,198,902.68x = 2,161,311,355.12 × 861,351,140.46 - Step 4: Simplify right side
1,566,198,902.68x = 1,861,648,000,621,760,000 - Step 5: Solve for x
x = 1,861,648,000,621,760,000/1,566,198,902.68 - Step 6: Final answer
x = 1,188,640,853.62
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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.