Finding the Fourth Proportional to 1,380,771.12, 1,904,482.62 and 921,654.21
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Solution
The fourth proportional to 1,380,771.12, 1,904,482.62 and 921,654.21 is: 1,271,227.65
Step by Step Solution
- Step 1: Write the proportion equation
1,380,771.12 : 1,904,482.62 = 921,654.21 : x - Step 2: Convert to fraction form
1,380,771.12/1,904,482.62 = 921,654.21/x - Step 3: Cross multiply
1,380,771.12x = 1,904,482.62 × 921,654.21 - Step 4: Simplify right side
1,380,771.12x = 1,755,274,424,594.83 - Step 5: Solve for x
x = 1,755,274,424,594.83/1,380,771.12 - Step 6: Final answer
x = 1,271,227.65
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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.