Finding the Fourth Proportional to 1,988,715.81, 2,744,339.23 and 1,161,866.09
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Solution
The fourth proportional to 1,988,715.81, 2,744,339.23 and 1,161,866.09 is: 1,603,323.45
Step by Step Solution
- Step 1: Write the proportion equation
1,988,715.81 : 2,744,339.23 = 1,161,866.09 : x - Step 2: Convert to fraction form
1,988,715.81/2,744,339.23 = 1,161,866.09/x - Step 3: Cross multiply
1,988,715.81x = 2,744,339.23 × 1,161,866.09 - Step 4: Simplify right side
1,988,715.81x = 3,188,554,699,106.89 - Step 5: Solve for x
x = 3,188,554,699,106.89/1,988,715.81 - Step 6: Final answer
x = 1,603,323.45
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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.