Finding the Fourth Proportional to 3,678,619.20, 5,518,101.60 and 1,154,356.80
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Solution
The fourth proportional to 3,678,619.20, 5,518,101.60 and 1,154,356.80 is: 1,731,589.42
Step by Step Solution
- Step 1: Write the proportion equation
3,678,619.20 : 5,518,101.60 = 1,154,356.80 : x - Step 2: Convert to fraction form
3,678,619.20/5,518,101.60 = 1,154,356.80/x - Step 3: Cross multiply
3,678,619.20x = 5,518,101.60 × 1,154,356.80 - Step 4: Simplify right side
3,678,619.20x = 6,369,858,105,050.88 - Step 5: Solve for x
x = 6,369,858,105,050.88/3,678,619.20 - Step 6: Final answer
x = 1,731,589.42
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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.