Finding the Fourth Proportional to 639,865.26, 883,112.94 and 394,992.99
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Solution
The fourth proportional to 639,865.26, 883,112.94 and 394,992.99 is: 545,151.37
Step by Step Solution
- Step 1: Write the proportion equation
639,865.26 : 883,112.94 = 394,992.99 : x - Step 2: Convert to fraction form
639,865.26/883,112.94 = 394,992.99/x - Step 3: Cross multiply
639,865.26x = 883,112.94 × 394,992.99 - Step 4: Simplify right side
639,865.26x = 348,823,420,678.29 - Step 5: Solve for x
x = 348,823,420,678.29/639,865.26 - Step 6: Final answer
x = 545,151.37
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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.