Finding the Fourth Proportional to 682,369.09, 1,021,454.12 and 445,201.09
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Solution
The fourth proportional to 682,369.09, 1,021,454.12 and 445,201.09 is: 666,431.84
Step by Step Solution
- Step 1: Write the proportion equation
682,369.09 : 1,021,454.12 = 445,201.09 : x - Step 2: Convert to fraction form
682,369.09/1,021,454.12 = 445,201.09/x - Step 3: Cross multiply
682,369.09x = 1,021,454.12 × 445,201.09 - Step 4: Simplify right side
682,369.09x = 454,752,485,382.99 - Step 5: Solve for x
x = 454,752,485,382.99/682,369.09 - Step 6: Final answer
x = 666,431.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.