Finding the Fourth Proportional to 2,119,745.60, 3,175,471.20 and 1,275,790.40
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Solution
The fourth proportional to 2,119,745.60, 3,175,471.20 and 1,275,790.40 is: 1,911,189.57
Step by Step Solution
- Step 1: Write the proportion equation
2,119,745.60 : 3,175,471.20 = 1,275,790.40 : x - Step 2: Convert to fraction form
2,119,745.60/3,175,471.20 = 1,275,790.40/x - Step 3: Cross multiply
2,119,745.60x = 3,175,471.20 × 1,275,790.40 - Step 4: Simplify right side
2,119,745.60x = 4,051,235,672,436.48 - Step 5: Solve for x
x = 4,051,235,672,436.48/2,119,745.60 - Step 6: Final answer
x = 1,911,189.57
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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.