Finding the Fourth Proportional to 2,170,568,709.80, 2,995,386,295.74 and 1,217,817,922.94
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Solution
The fourth proportional to 2,170,568,709.80, 2,995,386,295.74 and 1,217,817,922.94 is: 1,680,589,561.90
Step by Step Solution
- Step 1: Write the proportion equation
2,170,568,709.80 : 2,995,386,295.74 = 1,217,817,922.94 : x - Step 2: Convert to fraction form
2,170,568,709.80/2,995,386,295.74 = 1,217,817,922.94/x - Step 3: Cross multiply
2,170,568,709.80x = 2,995,386,295.74 × 1,217,817,922.94 - Step 4: Simplify right side
2,170,568,709.80x = 3,647,835,117,079,747,072 - Step 5: Solve for x
x = 3,647,835,117,079,747,072/2,170,568,709.80 - Step 6: Final answer
x = 1,680,589,561.90
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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.