Finding the Fourth Proportional to 718,079.36, 990,954.24 and 412,074.08
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Solution
The fourth proportional to 718,079.36, 990,954.24 and 412,074.08 is: 568,664.94
Step by Step Solution
- Step 1: Write the proportion equation
718,079.36 : 990,954.24 = 412,074.08 : x - Step 2: Convert to fraction form
718,079.36/990,954.24 = 412,074.08/x - Step 3: Cross multiply
718,079.36x = 990,954.24 × 412,074.08 - Step 4: Simplify right side
718,079.36x = 408,346,556,770.10 - Step 5: Solve for x
x = 408,346,556,770.10/718,079.36 - Step 6: Final answer
x = 568,664.94
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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.