Finding the Fourth Proportional to 512,138.43, 769,203.54 and 417,438.09
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Solution
The fourth proportional to 512,138.43, 769,203.54 and 417,438.09 is: 626,968.88
Step by Step Solution
- Step 1: Write the proportion equation
512,138.43 : 769,203.54 = 417,438.09 : x - Step 2: Convert to fraction form
512,138.43/769,203.54 = 417,438.09/x - Step 3: Cross multiply
512,138.43x = 769,203.54 × 417,438.09 - Step 4: Simplify right side
512,138.43x = 321,094,856,558.84 - Step 5: Solve for x
x = 321,094,856,558.84/512,138.43 - Step 6: Final answer
x = 626,968.88
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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.