Finding the Fourth Proportional to 768,138.12, 1,149,974.82 and 447,310.62
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Solution
The fourth proportional to 768,138.12, 1,149,974.82 and 447,310.62 is: 669,665.96
Step by Step Solution
- Step 1: Write the proportion equation
768,138.12 : 1,149,974.82 = 447,310.62 : x - Step 2: Convert to fraction form
768,138.12/1,149,974.82 = 447,310.62/x - Step 3: Cross multiply
768,138.12x = 1,149,974.82 × 447,310.62 - Step 4: Simplify right side
768,138.12x = 514,395,949,718.59 - Step 5: Solve for x
x = 514,395,949,718.59/768,138.12 - Step 6: Final answer
x = 669,665.96
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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.