Finding the Fourth Proportional to 1,239,584.92, 1,860,373.94 and 640,721.56
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Solution
The fourth proportional to 1,239,584.92, 1,860,373.94 and 640,721.56 is: 961,597.45
Step by Step Solution
- Step 1: Write the proportion equation
1,239,584.92 : 1,860,373.94 = 640,721.56 : x - Step 2: Convert to fraction form
1,239,584.92/1,860,373.94 = 640,721.56/x - Step 3: Cross multiply
1,239,584.92x = 1,860,373.94 × 640,721.56 - Step 4: Simplify right side
1,239,584.92x = 1,191,981,693,020.15 - Step 5: Solve for x
x = 1,191,981,693,020.15/1,239,584.92 - Step 6: Final answer
x = 961,597.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.