Finding the Fourth Proportional to 1,380,755.44, 1,904,460.97 and 921,638.53
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Solution
The fourth proportional to 1,380,755.44, 1,904,460.97 and 921,638.53 is: 1,271,206.01
Step by Step Solution
- Step 1: Write the proportion equation
1,380,755.44 : 1,904,460.97 = 921,638.53 : x - Step 2: Convert to fraction form
1,380,755.44/1,904,460.97 = 921,638.53/x - Step 3: Cross multiply
1,380,755.44x = 1,904,460.97 × 921,638.53 - Step 4: Simplify right side
1,380,755.44x = 1,755,224,608,833.17 - Step 5: Solve for x
x = 1,755,224,608,833.17/1,380,755.44 - Step 6: Final answer
x = 1,271,206.01
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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.