Finding the Fourth Proportional to 414,120.78, 621,163.09 and 129,804.84
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Solution
The fourth proportional to 414,120.78, 621,163.09 and 129,804.84 is: 194,701.59
Step by Step Solution
- Step 1: Write the proportion equation
414,120.78 : 621,163.09 = 129,804.84 : x - Step 2: Convert to fraction form
414,120.78/621,163.09 = 129,804.84/x - Step 3: Cross multiply
414,120.78x = 621,163.09 × 129,804.84 - Step 4: Simplify right side
414,120.78x = 80,629,975,511.36 - Step 5: Solve for x
x = 80,629,975,511.36/414,120.78 - Step 6: Final answer
x = 194,701.59
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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.