Finding the Fourth Proportional to 1,221,182.06, 1,831,939.74 and 422,249.09
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Solution
The fourth proportional to 1,221,182.06, 1,831,939.74 and 422,249.09 is: 633,431.25
Step by Step Solution
- Step 1: Write the proportion equation
1,221,182.06 : 1,831,939.74 = 422,249.09 : x - Step 2: Convert to fraction form
1,221,182.06/1,831,939.74 = 422,249.09/x - Step 3: Cross multiply
1,221,182.06x = 1,831,939.74 × 422,249.09 - Step 4: Simplify right side
1,221,182.06x = 773,534,878,990.14 - Step 5: Solve for x
x = 773,534,878,990.14/1,221,182.06 - Step 6: Final answer
x = 633,431.25
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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.