Finding the Fourth Proportional to 572,586.40, 858,879.60 and 440,135.20
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Solution
The fourth proportional to 572,586.40, 858,879.60 and 440,135.20 is: 660,202.80
Step by Step Solution
- Step 1: Write the proportion equation
572,586.40 : 858,879.60 = 440,135.20 : x - Step 2: Convert to fraction form
572,586.40/858,879.60 = 440,135.20/x - Step 3: Cross multiply
572,586.40x = 858,879.60 × 440,135.20 - Step 4: Simplify right side
572,586.40x = 378,023,144,521.92 - Step 5: Solve for x
x = 378,023,144,521.92/572,586.40 - Step 6: Final answer
x = 660,202.80
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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.