Finding the Fourth Proportional to 431,976.14, 647,438.90 and 305,652.79
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Solution
The fourth proportional to 431,976.14, 647,438.90 and 305,652.79 is: 458,107.49
Step by Step Solution
- Step 1: Write the proportion equation
431,976.14 : 647,438.90 = 305,652.79 : x - Step 2: Convert to fraction form
431,976.14/647,438.90 = 305,652.79/x - Step 3: Cross multiply
431,976.14x = 647,438.90 × 305,652.79 - Step 4: Simplify right side
431,976.14x = 197,891,505,420.57 - Step 5: Solve for x
x = 197,891,505,420.57/431,976.14 - Step 6: Final answer
x = 458,107.49
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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.