Finding the Fourth Proportional to 1,419,744.40, 2,129,616.60 and 1,317,101.20
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Solution
The fourth proportional to 1,419,744.40, 2,129,616.60 and 1,317,101.20 is: 1,975,651.80
Step by Step Solution
- Step 1: Write the proportion equation
1,419,744.40 : 2,129,616.60 = 1,317,101.20 : x - Step 2: Convert to fraction form
1,419,744.40/2,129,616.60 = 1,317,101.20/x - Step 3: Cross multiply
1,419,744.40x = 2,129,616.60 × 1,317,101.20 - Step 4: Simplify right side
1,419,744.40x = 2,804,920,579,399.92 - Step 5: Solve for x
x = 2,804,920,579,399.92/1,419,744.40 - Step 6: Final answer
x = 1,975,651.80
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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.