Finding the Fourth Proportional to 489,149.20, 733,723.80 and 423,539.20
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Solution
The fourth proportional to 489,149.20, 733,723.80 and 423,539.20 is: 635,308.80
Step by Step Solution
- Step 1: Write the proportion equation
489,149.20 : 733,723.80 = 423,539.20 : x - Step 2: Convert to fraction form
489,149.20/733,723.80 = 423,539.20/x - Step 3: Cross multiply
489,149.20x = 733,723.80 × 423,539.20 - Step 4: Simplify right side
489,149.20x = 310,760,791,272.96 - Step 5: Solve for x
x = 310,760,791,272.96/489,149.20 - Step 6: Final answer
x = 635,308.80
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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.