Finding the Fourth Proportional to 919,149.35, 1,378,761.12 and 320,171.09
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Solution
The fourth proportional to 919,149.35, 1,378,761.12 and 320,171.09 is: 480,269.56
Step by Step Solution
- Step 1: Write the proportion equation
919,149.35 : 1,378,761.12 = 320,171.09 : x - Step 2: Convert to fraction form
919,149.35/1,378,761.12 = 320,171.09/x - Step 3: Cross multiply
919,149.35x = 1,378,761.12 × 320,171.09 - Step 4: Simplify right side
919,149.35x = 441,439,454,086.92 - Step 5: Solve for x
x = 441,439,454,086.92/919,149.35 - Step 6: Final answer
x = 480,269.56
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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.