Finding the Fourth Proportional to 12,405,474.18, 18,609,378.09 and 3,651,758.49
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Solution
The fourth proportional to 12,405,474.18, 18,609,378.09 and 3,651,758.49 is: 5,477,981.21
Step by Step Solution
- Step 1: Write the proportion equation
12,405,474.18 : 18,609,378.09 = 3,651,758.49 : x - Step 2: Convert to fraction form
12,405,474.18/18,609,378.09 = 3,651,758.49/x - Step 3: Cross multiply
12,405,474.18x = 18,609,378.09 × 3,651,758.49 - Step 4: Simplify right side
12,405,474.18x = 67,956,954,433,777.48 - Step 5: Solve for x
x = 67,956,954,433,777.48/12,405,474.18 - Step 6: Final answer
x = 5,477,981.21
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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.