Finding the Fourth Proportional to 1,121,431.67, 1,682,066.16 and 438,190.09
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Solution
The fourth proportional to 1,121,431.67, 1,682,066.16 and 438,190.09 is: 657,253.35
Step by Step Solution
- Step 1: Write the proportion equation
1,121,431.67 : 1,682,066.16 = 438,190.09 : x - Step 2: Convert to fraction form
1,121,431.67/1,682,066.16 = 438,190.09/x - Step 3: Cross multiply
1,121,431.67x = 1,682,066.16 × 438,190.09 - Step 4: Simplify right side
1,121,431.67x = 737,064,722,036.35 - Step 5: Solve for x
x = 737,064,722,036.35/1,121,431.67 - Step 6: Final answer
x = 657,253.35
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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.