Finding the Fourth Proportional to 992,717.70, 1,489,076.55 and 393,821.70
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Solution
The fourth proportional to 992,717.70, 1,489,076.55 and 393,821.70 is: 590,732.55
Step by Step Solution
- Step 1: Write the proportion equation
992,717.70 : 1,489,076.55 = 393,821.70 : x - Step 2: Convert to fraction form
992,717.70/1,489,076.55 = 393,821.70/x - Step 3: Cross multiply
992,717.70x = 1,489,076.55 × 393,821.70 - Step 4: Simplify right side
992,717.70x = 586,430,658,351.14 - Step 5: Solve for x
x = 586,430,658,351.14/992,717.70 - Step 6: Final answer
x = 590,732.55
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1.5x scale
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.