Finding the Fourth Proportional to 1,989,704.13, 2,743,841.07 and 1,263,290.73
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Solution
The fourth proportional to 1,989,704.13, 2,743,841.07 and 1,263,290.73 is: 1,742,102.73
Step by Step Solution
- Step 1: Write the proportion equation
1,989,704.13 : 2,743,841.07 = 1,263,290.73 : x - Step 2: Convert to fraction form
1,989,704.13/2,743,841.07 = 1,263,290.73/x - Step 3: Cross multiply
1,989,704.13x = 2,743,841.07 × 1,263,290.73 - Step 4: Simplify right side
1,989,704.13x = 3,466,268,988,324.28 - Step 5: Solve for x
x = 3,466,268,988,324.28/1,989,704.13 - Step 6: Final answer
x = 1,742,102.73
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.