Finding the Fourth Proportional to 1,991,777,428.36, 2,987,677,518.68 and 827,245,920.04
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Solution
The fourth proportional to 1,991,777,428.36, 2,987,677,518.68 and 827,245,920.04 is: 1,240,873,604.92
Step by Step Solution
- Step 1: Write the proportion equation
1,991,777,428.36 : 2,987,677,518.68 = 827,245,920.04 : x - Step 2: Convert to fraction form
1,991,777,428.36/2,987,677,518.68 = 827,245,920.04/x - Step 3: Cross multiply
1,991,777,428.36x = 2,987,677,518.68 × 827,245,920.04 - Step 4: Simplify right side
1,991,777,428.36x = 2,471,544,037,723,260,416 - Step 5: Solve for x
x = 2,471,544,037,723,260,416/1,991,777,428.36 - Step 6: Final answer
x = 1,240,873,604.92
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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.