Finding the Fourth Proportional to 684,311.20, 1,024,522.80 and 647,072.80
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Solution
The fourth proportional to 684,311.20, 1,024,522.80 and 647,072.80 is: 968,770.99
Step by Step Solution
- Step 1: Write the proportion equation
684,311.20 : 1,024,522.80 = 647,072.80 : x - Step 2: Convert to fraction form
684,311.20/1,024,522.80 = 647,072.80/x - Step 3: Cross multiply
684,311.20x = 1,024,522.80 × 647,072.80 - Step 4: Simplify right side
684,311.20x = 662,940,836,859.84 - Step 5: Solve for x
x = 662,940,836,859.84/684,311.20 - Step 6: Final answer
x = 968,770.99
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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.