Finding the Fourth Proportional to 1,327,616.21, 1,991,372.97 and 380,986.92
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Solution
The fourth proportional to 1,327,616.21, 1,991,372.97 and 380,986.92 is: 571,465.65
Step by Step Solution
- Step 1: Write the proportion equation
1,327,616.21 : 1,991,372.97 = 380,986.92 : x - Step 2: Convert to fraction form
1,327,616.21/1,991,372.97 = 380,986.92/x - Step 3: Cross multiply
1,327,616.21x = 1,991,372.97 × 380,986.92 - Step 4: Simplify right side
1,327,616.21x = 758,687,054,411.55 - Step 5: Solve for x
x = 758,687,054,411.55/1,327,616.21 - Step 6: Final answer
x = 571,465.65
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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.