Finding the Fourth Proportional to 2,128,419.75, 3,189,857.25 and 864,770.07
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Solution
The fourth proportional to 2,128,419.75, 3,189,857.25 and 864,770.07 is: 1,296,028.70
Step by Step Solution
- Step 1: Write the proportion equation
2,128,419.75 : 3,189,857.25 = 864,770.07 : x - Step 2: Convert to fraction form
2,128,419.75/3,189,857.25 = 864,770.07/x - Step 3: Cross multiply
2,128,419.75x = 3,189,857.25 × 864,770.07 - Step 4: Simplify right side
2,128,419.75x = 2,758,493,077,372.51 - Step 5: Solve for x
x = 2,758,493,077,372.51/2,128,419.75 - Step 6: Final answer
x = 1,296,028.70
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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.