Finding the Fourth Proportional to 1,218,772,671.18, 1,682,421,199.41 and 822,832,001.97
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Solution
The fourth proportional to 1,218,772,671.18, 1,682,421,199.41 and 822,832,001.97 is: 1,135,855,796.90
Step by Step Solution
- Step 1: Write the proportion equation
1,218,772,671.18 : 1,682,421,199.41 = 822,832,001.97 : x - Step 2: Convert to fraction form
1,218,772,671.18/1,682,421,199.41 = 822,832,001.97/x - Step 3: Cross multiply
1,218,772,671.18x = 1,682,421,199.41 × 822,832,001.97 - Step 4: Simplify right side
1,218,772,671.18x = 1,384,350,003,659,508,736 - Step 5: Solve for x
x = 1,384,350,003,659,508,736/1,218,772,671.18 - Step 6: Final answer
x = 1,135,855,796.90
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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.