Finding the Fourth Proportional to 5,405,152.80, 8,107,729.20 and 3,491,965.20
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Solution
The fourth proportional to 5,405,152.80, 8,107,729.20 and 3,491,965.20 is: 5,237,947.80
Step by Step Solution
- Step 1: Write the proportion equation
5,405,152.80 : 8,107,729.20 = 3,491,965.20 : x - Step 2: Convert to fraction form
5,405,152.80/8,107,729.20 = 3,491,965.20/x - Step 3: Cross multiply
5,405,152.80x = 8,107,729.20 × 3,491,965.20 - Step 4: Simplify right side
5,405,152.80x = 28,311,908,217,423.84 - Step 5: Solve for x
x = 28,311,908,217,423.84/5,405,152.80 - Step 6: Final answer
x = 5,237,947.80
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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.