Finding the Fourth Proportional to 3,643,540.40, 5,465,310.60 and 1,119,321.20
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Solution
The fourth proportional to 3,643,540.40, 5,465,310.60 and 1,119,321.20 is: 1,678,981.80
Step by Step Solution
- Step 1: Write the proportion equation
3,643,540.40 : 5,465,310.60 = 1,119,321.20 : x - Step 2: Convert to fraction form
3,643,540.40/5,465,310.60 = 1,119,321.20/x - Step 3: Cross multiply
3,643,540.40x = 5,465,310.60 × 1,119,321.20 - Step 4: Simplify right side
3,643,540.40x = 6,117,438,019,164.72 - Step 5: Solve for x
x = 6,117,438,019,164.72/3,643,540.40 - Step 6: Final answer
x = 1,678,981.80
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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.