Finding the Fourth Proportional to 1,988,741.68, 2,744,369.04 and 1,129,189.12
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Solution
The fourth proportional to 1,988,741.68, 2,744,369.04 and 1,129,189.12 is: 1,558,227.34
Step by Step Solution
- Step 1: Write the proportion equation
1,988,741.68 : 2,744,369.04 = 1,129,189.12 : x - Step 2: Convert to fraction form
1,988,741.68/2,744,369.04 = 1,129,189.12/x - Step 3: Cross multiply
1,988,741.68x = 2,744,369.04 × 1,129,189.12 - Step 4: Simplify right side
1,988,741.68x = 3,098,911,661,232.85 - Step 5: Solve for x
x = 3,098,911,661,232.85/1,988,741.68 - Step 6: Final answer
x = 1,558,227.34
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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.