Finding the Fourth Proportional to 12,228,314.40, 18,340,138.80 and 3,708,928.80
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Solution
The fourth proportional to 12,228,314.40, 18,340,138.80 and 3,708,928.80 is: 5,562,685.65
Step by Step Solution
- Step 1: Write the proportion equation
12,228,314.40 : 18,340,138.80 = 3,708,928.80 : x - Step 2: Convert to fraction form
12,228,314.40/18,340,138.80 = 3,708,928.80/x - Step 3: Cross multiply
12,228,314.40x = 18,340,138.80 × 3,708,928.80 - Step 4: Simplify right side
12,228,314.40x = 68,022,268,991,317.44 - Step 5: Solve for x
x = 68,022,268,991,317.44/12,228,314.40 - Step 6: Final answer
x = 5,562,685.65
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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.