Finding the Fourth Proportional to 1,190,611.62, 1,786,163.48 and 391,941.09
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Solution
The fourth proportional to 1,190,611.62, 1,786,163.48 and 391,941.09 is: 587,992.63
Step by Step Solution
- Step 1: Write the proportion equation
1,190,611.62 : 1,786,163.48 = 391,941.09 : x - Step 2: Convert to fraction form
1,190,611.62/1,786,163.48 = 391,941.09/x - Step 3: Cross multiply
1,190,611.62x = 1,786,163.48 × 391,941.09 - Step 4: Simplify right side
1,190,611.62x = 700,070,859,309.69 - Step 5: Solve for x
x = 700,070,859,309.69/1,190,611.62 - Step 6: Final answer
x = 587,992.63
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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.