Finding the Fourth Proportional to 12,171,664.80, 18,257,497.20 and 5,794,372.80
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Solution
The fourth proportional to 12,171,664.80, 18,257,497.20 and 5,794,372.80 is: 8,691,559.20
Step by Step Solution
- Step 1: Write the proportion equation
12,171,664.80 : 18,257,497.20 = 5,794,372.80 : x - Step 2: Convert to fraction form
12,171,664.80/18,257,497.20 = 5,794,372.80/x - Step 3: Cross multiply
12,171,664.80x = 18,257,497.20 × 5,794,372.80 - Step 4: Simplify right side
12,171,664.80x = 105,790,745,171,756.16 - Step 5: Solve for x
x = 105,790,745,171,756.16/12,171,664.80 - Step 6: Final answer
x = 8,691,559.20
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1.5x scale
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.