Finding the Fourth Proportional to 1,987,266.70, 2,981,339.88 and 725,090.68
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Solution
The fourth proportional to 1,987,266.70, 2,981,339.88 and 725,090.68 is: 1,087,796.50
Step by Step Solution
- Step 1: Write the proportion equation
1,987,266.70 : 2,981,339.88 = 725,090.68 : x - Step 2: Convert to fraction form
1,987,266.70/2,981,339.88 = 725,090.68/x - Step 3: Cross multiply
1,987,266.70x = 2,981,339.88 × 725,090.68 - Step 4: Simplify right side
1,987,266.70x = 2,161,741,760,900.32 - Step 5: Solve for x
x = 2,161,741,760,900.32/1,987,266.70 - Step 6: Final answer
x = 1,087,796.50
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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.