Finding the Fourth Proportional to 3,969,710.40, 5,479,433.84 and 3,155,359.08
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Solution
The fourth proportional to 3,969,710.40, 5,479,433.84 and 3,155,359.08 is: 4,355,375.98
Step by Step Solution
- Step 1: Write the proportion equation
3,969,710.40 : 5,479,433.84 = 3,155,359.08 : x - Step 2: Convert to fraction form
3,969,710.40/5,479,433.84 = 3,155,359.08/x - Step 3: Cross multiply
3,969,710.40x = 5,479,433.84 × 3,155,359.08 - Step 4: Simplify right side
3,969,710.40x = 17,289,581,320,303.27 - Step 5: Solve for x
x = 17,289,581,320,303.27/3,969,710.40 - Step 6: Final answer
x = 4,355,375.98
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.