Finding the Fourth Proportional to 10,642,964.80, 15,966,520.80 and 4,252,129.60
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Solution
The fourth proportional to 10,642,964.80, 15,966,520.80 and 4,252,129.60 is: 6,379,022.85
Step by Step Solution
- Step 1: Write the proportion equation
10,642,964.80 : 15,966,520.80 = 4,252,129.60 : x - Step 2: Convert to fraction form
10,642,964.80/15,966,520.80 = 4,252,129.60/x - Step 3: Cross multiply
10,642,964.80x = 15,966,520.80 × 4,252,129.60 - Step 4: Simplify right side
10,642,964.80x = 67,891,715,702,695.68 - Step 5: Solve for x
x = 67,891,715,702,695.68/10,642,964.80 - Step 6: Final answer
x = 6,379,022.85
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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.