Finding the Fourth Proportional to 1,921,312.96, 2,651,514.42 and 1,105,640.80
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Solution
The fourth proportional to 1,921,312.96, 2,651,514.42 and 1,105,640.80 is: 1,525,843.31
Step by Step Solution
- Step 1: Write the proportion equation
1,921,312.96 : 2,651,514.42 = 1,105,640.80 : x - Step 2: Convert to fraction form
1,921,312.96/2,651,514.42 = 1,105,640.80/x - Step 3: Cross multiply
1,921,312.96x = 2,651,514.42 × 1,105,640.80 - Step 4: Simplify right side
1,921,312.96x = 2,931,622,524,540.34 - Step 5: Solve for x
x = 2,931,622,524,540.34/1,921,312.96 - Step 6: Final answer
x = 1,525,843.31
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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.