Finding the Fourth Proportional to 2,135,186.20, 3,198,113.70 and 1,658,128.60
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Solution
The fourth proportional to 2,135,186.20, 3,198,113.70 and 1,658,128.60 is: 2,483,569.72
Step by Step Solution
- Step 1: Write the proportion equation
2,135,186.20 : 3,198,113.70 = 1,658,128.60 : x - Step 2: Convert to fraction form
2,135,186.20/3,198,113.70 = 1,658,128.60/x - Step 3: Cross multiply
2,135,186.20x = 3,198,113.70 × 1,658,128.60 - Step 4: Simplify right side
2,135,186.20x = 5,302,883,792,021.82 - Step 5: Solve for x
x = 5,302,883,792,021.82/2,135,186.20 - Step 6: Final answer
x = 2,483,569.72
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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.