Finding the Fourth Proportional to 638,578.21, 881,192.90 and 352,092.14
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Solution
The fourth proportional to 638,578.21, 881,192.90 and 352,092.14 is: 485,862.33
Step by Step Solution
- Step 1: Write the proportion equation
638,578.21 : 881,192.90 = 352,092.14 : x - Step 2: Convert to fraction form
638,578.21/881,192.90 = 352,092.14/x - Step 3: Cross multiply
638,578.21x = 881,192.90 × 352,092.14 - Step 4: Simplify right side
638,578.21x = 310,261,093,913.81 - Step 5: Solve for x
x = 310,261,093,913.81/638,578.21 - Step 6: Final answer
x = 485,862.33
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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.