Finding the Fourth Proportional to 1,230,213.80, 1,845,320.70 and 981,381.80
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Solution
The fourth proportional to 1,230,213.80, 1,845,320.70 and 981,381.80 is: 1,472,072.70
Step by Step Solution
- Step 1: Write the proportion equation
1,230,213.80 : 1,845,320.70 = 981,381.80 : x - Step 2: Convert to fraction form
1,230,213.80/1,845,320.70 = 981,381.80/x - Step 3: Cross multiply
1,230,213.80x = 1,845,320.70 × 981,381.80 - Step 4: Simplify right side
1,230,213.80x = 1,810,964,150,143.26 - Step 5: Solve for x
x = 1,810,964,150,143.26/1,230,213.80 - Step 6: Final answer
x = 1,472,072.70
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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.