Finding the Fourth Proportional to 1,221,544.72, 1,831,431.16 and 821,192.40
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Solution
The fourth proportional to 1,221,544.72, 1,831,431.16 and 821,192.40 is: 1,231,193.03
Step by Step Solution
- Step 1: Write the proportion equation
1,221,544.72 : 1,831,431.16 = 821,192.40 : x - Step 2: Convert to fraction form
1,221,544.72/1,831,431.16 = 821,192.40/x - Step 3: Cross multiply
1,221,544.72x = 1,831,431.16 × 821,192.40 - Step 4: Simplify right side
1,221,544.72x = 1,503,957,349,715.18 - Step 5: Solve for x
x = 1,503,957,349,715.18/1,221,544.72 - Step 6: Final answer
x = 1,231,193.03
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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.