Finding the Fourth Proportional to 738,194.76, 1,018,708.68 and 398,662.92
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Solution
The fourth proportional to 738,194.76, 1,018,708.68 and 398,662.92 is: 550,154.78
Step by Step Solution
- Step 1: Write the proportion equation
738,194.76 : 1,018,708.68 = 398,662.92 : x - Step 2: Convert to fraction form
738,194.76/1,018,708.68 = 398,662.92/x - Step 3: Cross multiply
738,194.76x = 1,018,708.68 × 398,662.92 - Step 4: Simplify right side
738,194.76x = 406,121,376,998.15 - Step 5: Solve for x
x = 406,121,376,998.15/738,194.76 - Step 6: Final answer
x = 550,154.78
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1.5x scale
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.