Finding the Fourth Proportional to 1,442,128.70, 2,161,667.62 and 543,181.49
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Solution
The fourth proportional to 1,442,128.70, 2,161,667.62 and 543,181.49 is: 814,197.68
Step by Step Solution
- Step 1: Write the proportion equation
1,442,128.70 : 2,161,667.62 = 543,181.49 : x - Step 2: Convert to fraction form
1,442,128.70/2,161,667.62 = 543,181.49/x - Step 3: Cross multiply
1,442,128.70x = 2,161,667.62 × 543,181.49 - Step 4: Simplify right side
1,442,128.70x = 1,174,177,838,716.35 - Step 5: Solve for x
x = 1,174,177,838,716.35/1,442,128.70 - Step 6: Final answer
x = 814,197.68
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.