Finding the Fourth Proportional to 5,659,739.80, 8,489,609.70 and 3,959,128.60
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Solution
The fourth proportional to 5,659,739.80, 8,489,609.70 and 3,959,128.60 is: 5,938,692.90
Step by Step Solution
- Step 1: Write the proportion equation
5,659,739.80 : 8,489,609.70 = 3,959,128.60 : x - Step 2: Convert to fraction form
5,659,739.80/8,489,609.70 = 3,959,128.60/x - Step 3: Cross multiply
5,659,739.80x = 8,489,609.70 × 3,959,128.60 - Step 4: Simplify right side
5,659,739.80x = 33,611,456,566,107.42 - Step 5: Solve for x
x = 33,611,456,566,107.42/5,659,739.80 - Step 6: Final answer
x = 5,938,692.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.