Finding the Fourth Proportional to 3,987,638,230.80, 5,981,457,346.20 and 2,681,568,829.20
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Solution
The fourth proportional to 3,987,638,230.80, 5,981,457,346.20 and 2,681,568,829.20 is: 4,022,353,243.80
Step by Step Solution
- Step 1: Write the proportion equation
3,987,638,230.80 : 5,981,457,346.20 = 2,681,568,829.20 : x - Step 2: Convert to fraction form
3,987,638,230.80/5,981,457,346.20 = 2,681,568,829.20/x - Step 3: Cross multiply
3,987,638,230.80x = 5,981,457,346.20 × 2,681,568,829.20 - Step 4: Simplify right side
3,987,638,230.80x = 16,039,689,572,759,271,424 - Step 5: Solve for x
x = 16,039,689,572,759,271,424/3,987,638,230.80 - Step 6: Final answer
x = 4,022,353,243.80
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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.