Finding the Fourth Proportional to 1,989,122.40, 2,744,893.44 and 1,129,569.12
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Solution
The fourth proportional to 1,989,122.40, 2,744,893.44 and 1,129,569.12 is: 1,558,751.17
Step by Step Solution
- Step 1: Write the proportion equation
1,989,122.40 : 2,744,893.44 = 1,129,569.12 : x - Step 2: Convert to fraction form
1,989,122.40/2,744,893.44 = 1,129,569.12/x - Step 3: Cross multiply
1,989,122.40x = 2,744,893.44 × 1,129,569.12 - Step 4: Simplify right side
1,989,122.40x = 3,100,546,867,514.57 - Step 5: Solve for x
x = 3,100,546,867,514.57/1,989,122.40 - Step 6: Final answer
x = 1,558,751.17
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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.