Finding the Fourth Proportional to 3,899,967,917.77, 5,381,966,047.49 and 2,115,821,315.31
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Solution
The fourth proportional to 3,899,967,917.77, 5,381,966,047.49 and 2,115,821,315.31 is: 2,919,839,014.49
Step by Step Solution
- Step 1: Write the proportion equation
3,899,967,917.77 : 5,381,966,047.49 = 2,115,821,315.31 : x - Step 2: Convert to fraction form
3,899,967,917.77/5,381,966,047.49 = 2,115,821,315.31/x - Step 3: Cross multiply
3,899,967,917.77x = 5,381,966,047.49 × 2,115,821,315.31 - Step 4: Simplify right side
3,899,967,917.77x = 11,387,278,481,554,053,120 - Step 5: Solve for x
x = 11,387,278,481,554,053,120/3,899,967,917.77 - Step 6: Final answer
x = 2,919,839,014.49
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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.