Finding the Fourth Proportional to 1,325,138.80, 1,987,708.20 and 327,866.80
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Solution
The fourth proportional to 1,325,138.80, 1,987,708.20 and 327,866.80 is: 491,800.20
Step by Step Solution
- Step 1: Write the proportion equation
1,325,138.80 : 1,987,708.20 = 327,866.80 : x - Step 2: Convert to fraction form
1,325,138.80/1,987,708.20 = 327,866.80/x - Step 3: Cross multiply
1,325,138.80x = 1,987,708.20 × 327,866.80 - Step 4: Simplify right side
1,325,138.80x = 651,703,526,867.76 - Step 5: Solve for x
x = 651,703,526,867.76/1,325,138.80 - Step 6: Final answer
x = 491,800.20
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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.