Finding the Fourth Proportional to 489,696.63, 675,782.76 and 271,905.78
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Solution
The fourth proportional to 489,696.63, 675,782.76 and 271,905.78 is: 375,230.75
Step by Step Solution
- Step 1: Write the proportion equation
489,696.63 : 675,782.76 = 271,905.78 : x - Step 2: Convert to fraction form
489,696.63/675,782.76 = 271,905.78/x - Step 3: Cross multiply
489,696.63x = 675,782.76 × 271,905.78 - Step 4: Simplify right side
489,696.63x = 183,749,233,729.91 - Step 5: Solve for x
x = 183,749,233,729.91/489,696.63 - Step 6: Final answer
x = 375,230.75
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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.