Finding the Fourth Proportional to 1,603,640.97, 2,212,185.67 and 991,598.09
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Solution
The fourth proportional to 1,603,640.97, 2,212,185.67 and 991,598.09 is: 1,367,886.65
Step by Step Solution
- Step 1: Write the proportion equation
1,603,640.97 : 2,212,185.67 = 991,598.09 : x - Step 2: Convert to fraction form
1,603,640.97/2,212,185.67 = 991,598.09/x - Step 3: Cross multiply
1,603,640.97x = 2,212,185.67 × 991,598.09 - Step 4: Simplify right side
1,603,640.97x = 2,193,599,071,557.45 - Step 5: Solve for x
x = 2,193,599,071,557.45/1,603,640.97 - Step 6: Final answer
x = 1,367,886.65
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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.