Finding the Fourth Proportional to 1,121,427.21, 1,682,059.47 and 438,185.62
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Solution
The fourth proportional to 1,121,427.21, 1,682,059.47 and 438,185.62 is: 657,246.66
Step by Step Solution
- Step 1: Write the proportion equation
1,121,427.21 : 1,682,059.47 = 438,185.62 : x - Step 2: Convert to fraction form
1,121,427.21/1,682,059.47 = 438,185.62/x - Step 3: Cross multiply
1,121,427.21x = 1,682,059.47 × 438,185.62 - Step 4: Simplify right side
1,121,427.21x = 737,054,280,626.18 - Step 5: Solve for x
x = 737,054,280,626.18/1,121,427.21 - Step 6: Final answer
x = 657,246.66
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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.