Finding the Fourth Proportional to 7,420,883.40, 11,131,325.10 and 5,739,193.80
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Solution
The fourth proportional to 7,420,883.40, 11,131,325.10 and 5,739,193.80 is: 8,608,790.70
Step by Step Solution
- Step 1: Write the proportion equation
7,420,883.40 : 11,131,325.10 = 5,739,193.80 : x - Step 2: Convert to fraction form
7,420,883.40/11,131,325.10 = 5,739,193.80/x - Step 3: Cross multiply
7,420,883.40x = 11,131,325.10 × 5,739,193.80 - Step 4: Simplify right side
7,420,883.40x = 63,884,831,999,704.38 - Step 5: Solve for x
x = 63,884,831,999,704.38/7,420,883.40 - Step 6: Final answer
x = 8,608,790.70
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1.5x scale
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.