Finding the Fourth Proportional to 709,548.20, 979,168.84 and 387,255.68
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Solution
The fourth proportional to 709,548.20, 979,168.84 and 387,255.68 is: 534,408.65
Step by Step Solution
- Step 1: Write the proportion equation
709,548.20 : 979,168.84 = 387,255.68 : x - Step 2: Convert to fraction form
709,548.20/979,168.84 = 387,255.68/x - Step 3: Cross multiply
709,548.20x = 979,168.84 × 387,255.68 - Step 4: Simplify right side
709,548.20x = 379,188,694,969.01 - Step 5: Solve for x
x = 379,188,694,969.01/709,548.20 - Step 6: Final answer
x = 534,408.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.