Finding the Fourth Proportional to 1,786,212.36, 2,679,406.11 and 721,121.58
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Solution
The fourth proportional to 1,786,212.36, 2,679,406.11 and 721,121.58 is: 1,081,717.72
Step by Step Solution
- Step 1: Write the proportion equation
1,786,212.36 : 2,679,406.11 = 721,121.58 : x - Step 2: Convert to fraction form
1,786,212.36/2,679,406.11 = 721,121.58/x - Step 3: Cross multiply
1,786,212.36x = 2,679,406.11 × 721,121.58 - Step 4: Simplify right side
1,786,212.36x = 1,932,177,567,504.85 - Step 5: Solve for x
x = 1,932,177,567,504.85/1,786,212.36 - Step 6: Final answer
x = 1,081,717.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.