Finding the Fourth Proportional to 1,188,582.84, 1,640,234.62 and 644,717.26
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Solution
The fourth proportional to 1,188,582.84, 1,640,234.62 and 644,717.26 is: 889,704.56
Step by Step Solution
- Step 1: Write the proportion equation
1,188,582.84 : 1,640,234.62 = 644,717.26 : x - Step 2: Convert to fraction form
1,188,582.84/1,640,234.62 = 644,717.26/x - Step 3: Cross multiply
1,188,582.84x = 1,640,234.62 × 644,717.26 - Step 4: Simplify right side
1,188,582.84x = 1,057,487,569,963.54 - Step 5: Solve for x
x = 1,057,487,569,963.54/1,188,582.84 - Step 6: Final answer
x = 889,704.56
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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.