Finding the Fourth Proportional to 1,279,021.12, 1,765,081.24 and 727,706.44
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Solution
The fourth proportional to 1,279,021.12, 1,765,081.24 and 727,706.44 is: 1,004,253.15
Step by Step Solution
- Step 1: Write the proportion equation
1,279,021.12 : 1,765,081.24 = 727,706.44 : x - Step 2: Convert to fraction form
1,279,021.12/1,765,081.24 = 727,706.44/x - Step 3: Cross multiply
1,279,021.12x = 1,765,081.24 × 727,706.44 - Step 4: Simplify right side
1,279,021.12x = 1,284,460,985,471.19 - Step 5: Solve for x
x = 1,284,460,985,471.19/1,279,021.12 - Step 6: Final answer
x = 1,004,253.15
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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.