Finding the Fourth Proportional to 1,988,647.80, 2,744,352.75 and 1,129,226.10
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Solution
The fourth proportional to 1,988,647.80, 2,744,352.75 and 1,129,226.10 is: 1,558,342.69
Step by Step Solution
- Step 1: Write the proportion equation
1,988,647.80 : 2,744,352.75 = 1,129,226.10 : x - Step 2: Convert to fraction form
1,988,647.80/2,744,352.75 = 1,129,226.10/x - Step 3: Cross multiply
1,988,647.80x = 2,744,352.75 × 1,129,226.10 - Step 4: Simplify right side
1,988,647.80x = 3,098,994,752,906.78 - Step 5: Solve for x
x = 3,098,994,752,906.78/1,988,647.80 - Step 6: Final answer
x = 1,558,342.69
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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.