Finding the Fourth Proportional to 3,619,538.87, 4,994,960.68 and 1,987,990.39
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Solution
The fourth proportional to 3,619,538.87, 4,994,960.68 and 1,987,990.39 is: 2,743,425.12
Step by Step Solution
- Step 1: Write the proportion equation
3,619,538.87 : 4,994,960.68 = 1,987,990.39 : x - Step 2: Convert to fraction form
3,619,538.87/4,994,960.68 = 1,987,990.39/x - Step 3: Cross multiply
3,619,538.87x = 4,994,960.68 × 1,987,990.39 - Step 4: Simplify right side
3,619,538.87x = 9,929,933,838,996.56 - Step 5: Solve for x
x = 9,929,933,838,996.56/3,619,538.87 - Step 6: Final answer
x = 2,743,425.12
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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.