Finding the Fourth Proportional to 664,415.20, 996,622.80 and 629,423.20
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Solution
The fourth proportional to 664,415.20, 996,622.80 and 629,423.20 is: 944,134.80
Step by Step Solution
- Step 1: Write the proportion equation
664,415.20 : 996,622.80 = 629,423.20 : x - Step 2: Convert to fraction form
664,415.20/996,622.80 = 629,423.20/x - Step 3: Cross multiply
664,415.20x = 996,622.80 × 629,423.20 - Step 4: Simplify right side
664,415.20x = 627,297,511,968.96 - Step 5: Solve for x
x = 627,297,511,968.96/664,415.20 - Step 6: Final answer
x = 944,134.80
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1.5x scale
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.