Finding the Fourth Proportional to 1,081,122.48, 1,491,991.11 and 717,920.10
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Solution
The fourth proportional to 1,081,122.48, 1,491,991.11 and 717,920.10 is: 990,757.69
Step by Step Solution
- Step 1: Write the proportion equation
1,081,122.48 : 1,491,991.11 = 717,920.10 : x - Step 2: Convert to fraction form
1,081,122.48/1,491,991.11 = 717,920.10/x - Step 3: Cross multiply
1,081,122.48x = 1,491,991.11 × 717,920.10 - Step 4: Simplify right side
1,081,122.48x = 1,071,130,406,890.31 - Step 5: Solve for x
x = 1,071,130,406,890.31/1,081,122.48 - Step 6: Final answer
x = 990,757.69
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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.