Finding the Fourth Proportional to 489,760,516.51, 675,869,512.99 and 269,743,942.51
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Solution
The fourth proportional to 489,760,516.51, 675,869,512.99 and 269,743,942.51 is: 372,246,640.78
Step by Step Solution
- Step 1: Write the proportion equation
489,760,516.51 : 675,869,512.99 = 269,743,942.51 : x - Step 2: Convert to fraction form
489,760,516.51/675,869,512.99 = 269,743,942.51/x - Step 3: Cross multiply
489,760,516.51x = 675,869,512.99 × 269,743,942.51 - Step 4: Simplify right side
489,760,516.51x = 182,311,707,056,236,256 - Step 5: Solve for x
x = 182,311,707,056,236,256/489,760,516.51 - Step 6: Final answer
x = 372,246,640.78
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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.