Finding the Fourth Proportional to 682,428.09, 1,021,542.62 and 445,260.09
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Solution
The fourth proportional to 682,428.09, 1,021,542.62 and 445,260.09 is: 666,520.27
Step by Step Solution
- Step 1: Write the proportion equation
682,428.09 : 1,021,542.62 = 445,260.09 : x - Step 2: Convert to fraction form
682,428.09/1,021,542.62 = 445,260.09/x - Step 3: Cross multiply
682,428.09x = 1,021,542.62 × 445,260.09 - Step 4: Simplify right side
682,428.09x = 454,852,156,693.74 - Step 5: Solve for x
x = 454,852,156,693.74/682,428.09 - Step 6: Final answer
x = 666,520.27
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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.