Finding the Fourth Proportional to 7,381,408.80, 11,072,113.20 and 5,491,840.80
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Solution
The fourth proportional to 7,381,408.80, 11,072,113.20 and 5,491,840.80 is: 8,237,761.20
Step by Step Solution
- Step 1: Write the proportion equation
7,381,408.80 : 11,072,113.20 = 5,491,840.80 : x - Step 2: Convert to fraction form
7,381,408.80/11,072,113.20 = 5,491,840.80/x - Step 3: Cross multiply
7,381,408.80x = 11,072,113.20 × 5,491,840.80 - Step 4: Simplify right side
7,381,408.80x = 60,806,283,013,978.55 - Step 5: Solve for x
x = 60,806,283,013,978.55/7,381,408.80 - Step 6: Final answer
x = 8,237,761.20
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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.