Finding the Fourth Proportional to 639,693.70, 959,540.55 and 324,765.70
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Solution
The fourth proportional to 639,693.70, 959,540.55 and 324,765.70 is: 487,148.55
Step by Step Solution
- Step 1: Write the proportion equation
639,693.70 : 959,540.55 = 324,765.70 : x - Step 2: Convert to fraction form
639,693.70/959,540.55 = 324,765.70/x - Step 3: Cross multiply
639,693.70x = 959,540.55 × 324,765.70 - Step 4: Simplify right side
639,693.70x = 311,625,858,399.14 - Step 5: Solve for x
x = 311,625,858,399.14/639,693.70 - Step 6: Final answer
x = 487,148.55
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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.