Finding the Fourth Proportional to 489,089.22, 674,934.48 and 274,228.62
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Solution
The fourth proportional to 489,089.22, 674,934.48 and 274,228.62 is: 378,430.65
Step by Step Solution
- Step 1: Write the proportion equation
489,089.22 : 674,934.48 = 274,228.62 : x - Step 2: Convert to fraction form
489,089.22/674,934.48 = 274,228.62/x - Step 3: Cross multiply
489,089.22x = 674,934.48 × 274,228.62 - Step 4: Simplify right side
489,089.22x = 185,086,351,040.82 - Step 5: Solve for x
x = 185,086,351,040.82/489,089.22 - Step 6: Final answer
x = 378,430.65
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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.