Finding the Fourth Proportional to 1,103,481.21, 1,522,755.50 and 644,638.26
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Solution
The fourth proportional to 1,103,481.21, 1,522,755.50 and 644,638.26 is: 889,572.42
Step by Step Solution
- Step 1: Write the proportion equation
1,103,481.21 : 1,522,755.50 = 644,638.26 : x - Step 2: Convert to fraction form
1,103,481.21/1,522,755.50 = 644,638.26/x - Step 3: Cross multiply
1,103,481.21x = 1,522,755.50 × 644,638.26 - Step 4: Simplify right side
1,103,481.21x = 981,626,452,702.24 - Step 5: Solve for x
x = 981,626,452,702.24/1,103,481.21 - Step 6: Final answer
x = 889,572.42
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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.