Finding the Fourth Proportional to 3,983,128,420.71, 5,497,436,917.67 and 2,375,686,569.99
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Solution
The fourth proportional to 3,983,128,420.71, 5,497,436,917.67 and 2,375,686,569.99 is: 3,278,876,720.81
Step by Step Solution
- Step 1: Write the proportion equation
3,983,128,420.71 : 5,497,436,917.67 = 2,375,686,569.99 : x - Step 2: Convert to fraction form
3,983,128,420.71/5,497,436,917.67 = 2,375,686,569.99/x - Step 3: Cross multiply
3,983,128,420.71x = 5,497,436,917.67 × 2,375,686,569.99 - Step 4: Simplify right side
3,983,128,420.71x = 13,060,187,054,663,960,576 - Step 5: Solve for x
x = 13,060,187,054,663,960,576/3,983,128,420.71 - Step 6: Final answer
x = 3,278,876,720.81
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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.