Finding the Fourth Proportional to 18,821,803.20, 28,232,121.60 and 5,358,631.20
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Solution
The fourth proportional to 18,821,803.20, 28,232,121.60 and 5,358,631.20 is: 8,037,780.76
Step by Step Solution
- Step 1: Write the proportion equation
18,821,803.20 : 28,232,121.60 = 5,358,631.20 : x - Step 2: Convert to fraction form
18,821,803.20/28,232,121.60 = 5,358,631.20/x - Step 3: Cross multiply
18,821,803.20x = 28,232,121.60 × 5,358,631.20 - Step 4: Simplify right side
18,821,803.20x = 151,285,527,647,953.94 - Step 5: Solve for x
x = 151,285,527,647,953.94/18,821,803.20 - Step 6: Final answer
x = 8,037,780.76
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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.