Finding the Fourth Proportional to 1,291,872.82, 1,780,936.68 and 908,710.42
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Solution
The fourth proportional to 1,291,872.82, 1,780,936.68 and 908,710.42 is: 1,252,720.62
Step by Step Solution
- Step 1: Write the proportion equation
1,291,872.82 : 1,780,936.68 = 908,710.42 : x - Step 2: Convert to fraction form
1,291,872.82/1,780,936.68 = 908,710.42/x - Step 3: Cross multiply
1,291,872.82x = 1,780,936.68 × 908,710.42 - Step 4: Simplify right side
1,291,872.82x = 1,618,355,718,476.21 - Step 5: Solve for x
x = 1,618,355,718,476.21/1,291,872.82 - Step 6: Final answer
x = 1,252,720.62
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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.