Finding the Fourth Proportional to 489,519.44, 675,509.64 and 274,639.76
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Solution
The fourth proportional to 489,519.44, 675,509.64 and 274,639.76 is: 378,987.62
Step by Step Solution
- Step 1: Write the proportion equation
489,519.44 : 675,509.64 = 274,639.76 : x - Step 2: Convert to fraction form
489,519.44/675,509.64 = 274,639.76/x - Step 3: Cross multiply
489,519.44x = 675,509.64 × 274,639.76 - Step 4: Simplify right side
489,519.44x = 185,521,805,407.29 - Step 5: Solve for x
x = 185,521,805,407.29/489,519.44 - Step 6: Final answer
x = 378,987.62
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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.