Finding the Fourth Proportional to 738,396.50, 1,018,987.71 and 398,864.75
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Solution
The fourth proportional to 738,396.50, 1,018,987.71 and 398,864.75 is: 550,433.65
Step by Step Solution
- Step 1: Write the proportion equation
738,396.50 : 1,018,987.71 = 398,864.75 : x - Step 2: Convert to fraction form
738,396.50/1,018,987.71 = 398,864.75/x - Step 3: Cross multiply
738,396.50x = 1,018,987.71 × 398,864.75 - Step 4: Simplify right side
738,396.50x = 406,438,278,202.22 - Step 5: Solve for x
x = 406,438,278,202.22/738,396.50 - Step 6: Final answer
x = 550,433.65
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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.