Finding the Fourth Proportional to 489,694.06, 675,128.16 and 319,632.94
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Solution
The fourth proportional to 489,694.06, 675,128.16 and 319,632.94 is: 440,669.42
Step by Step Solution
- Step 1: Write the proportion equation
489,694.06 : 675,128.16 = 319,632.94 : x - Step 2: Convert to fraction form
489,694.06/675,128.16 = 319,632.94/x - Step 3: Cross multiply
489,694.06x = 675,128.16 × 319,632.94 - Step 4: Simplify right side
489,694.06x = 215,793,198,657.59 - Step 5: Solve for x
x = 215,793,198,657.59/489,694.06 - Step 6: Final answer
x = 440,669.42
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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.