Finding the Fourth Proportional to 394,619.40, 591,929.10 and 252,901.80
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Solution
The fourth proportional to 394,619.40, 591,929.10 and 252,901.80 is: 379,352.70
Step by Step Solution
- Step 1: Write the proportion equation
394,619.40 : 591,929.10 = 252,901.80 : x - Step 2: Convert to fraction form
394,619.40/591,929.10 = 252,901.80/x - Step 3: Cross multiply
394,619.40x = 591,929.10 × 252,901.80 - Step 4: Simplify right side
394,619.40x = 149,699,934,862.38 - Step 5: Solve for x
x = 149,699,934,862.38/394,619.40 - Step 6: Final answer
x = 379,352.70
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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.