Finding the Fourth Proportional to 1,321,121.91, 1,823,151.74 and 777,278.19
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Solution
The fourth proportional to 1,321,121.91, 1,823,151.74 and 777,278.19 is: 1,072,645.96
Step by Step Solution
- Step 1: Write the proportion equation
1,321,121.91 : 1,823,151.74 = 777,278.19 : x - Step 2: Convert to fraction form
1,321,121.91/1,823,151.74 = 777,278.19/x - Step 3: Cross multiply
1,321,121.91x = 1,823,151.74 × 777,278.19 - Step 4: Simplify right side
1,321,121.91x = 1,417,096,080,676.16 - Step 5: Solve for x
x = 1,417,096,080,676.16/1,321,121.91 - Step 6: Final answer
x = 1,072,645.96
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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.