Finding the Fourth Proportional to 738,351.93, 1,018,926.09 and 398,820.18
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Solution
The fourth proportional to 738,351.93, 1,018,926.09 and 398,820.18 is: 550,372.08
Step by Step Solution
- Step 1: Write the proportion equation
738,351.93 : 1,018,926.09 = 398,820.18 : x - Step 2: Convert to fraction form
738,351.93/1,018,926.09 = 398,820.18/x - Step 3: Cross multiply
738,351.93x = 1,018,926.09 × 398,820.18 - Step 4: Simplify right side
738,351.93x = 406,368,286,620.50 - Step 5: Solve for x
x = 406,368,286,620.50/738,351.93 - Step 6: Final answer
x = 550,372.08
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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.