Finding the Fourth Proportional to 738,191.16, 1,018,703.84 and 398,659.40
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Solution
The fourth proportional to 738,191.16, 1,018,703.84 and 398,659.40 is: 550,149.99
Step by Step Solution
- Step 1: Write the proportion equation
738,191.16 : 1,018,703.84 = 398,659.40 : x - Step 2: Convert to fraction form
738,191.16/1,018,703.84 = 398,659.40/x - Step 3: Cross multiply
738,191.16x = 1,018,703.84 × 398,659.40 - Step 4: Simplify right side
738,191.16x = 406,115,861,632.10 - Step 5: Solve for x
x = 406,115,861,632.10/738,191.16 - Step 6: Final answer
x = 550,149.99
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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.