Finding the Fourth Proportional to 3,543,405.20, 5,315,107.80 and 3,291,462.80
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Solution
The fourth proportional to 3,543,405.20, 5,315,107.80 and 3,291,462.80 is: 4,937,194.20
Step by Step Solution
- Step 1: Write the proportion equation
3,543,405.20 : 5,315,107.80 = 3,291,462.80 : x - Step 2: Convert to fraction form
3,543,405.20/5,315,107.80 = 3,291,462.80/x - Step 3: Cross multiply
3,543,405.20x = 5,315,107.80 × 3,291,462.80 - Step 4: Simplify right side
3,543,405.20x = 17,494,479,601,689.84 - Step 5: Solve for x
x = 17,494,479,601,689.84/3,543,405.20 - Step 6: Final answer
x = 4,937,194.20
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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.