Finding the Fourth Proportional to 10,902,540.80, 16,353,811.20 and 6,640,515.20
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Solution
The fourth proportional to 10,902,540.80, 16,353,811.20 and 6,640,515.20 is: 9,960,772.80
Step by Step Solution
- Step 1: Write the proportion equation
10,902,540.80 : 16,353,811.20 = 6,640,515.20 : x - Step 2: Convert to fraction form
10,902,540.80/16,353,811.20 = 6,640,515.20/x - Step 3: Cross multiply
10,902,540.80x = 16,353,811.20 × 6,640,515.20 - Step 4: Simplify right side
10,902,540.80x = 108,597,731,851,530.23 - Step 5: Solve for x
x = 108,597,731,851,530.23/10,902,540.80 - Step 6: Final answer
x = 9,960,772.80
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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.