Finding the Fourth Proportional to 10,178,863.80, 15,268,295.70 and 8,584,540.80
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Solution
The fourth proportional to 10,178,863.80, 15,268,295.70 and 8,584,540.80 is: 12,876,811.20
Step by Step Solution
- Step 1: Write the proportion equation
10,178,863.80 : 15,268,295.70 = 8,584,540.80 : x - Step 2: Convert to fraction form
10,178,863.80/15,268,295.70 = 8,584,540.80/x - Step 3: Cross multiply
10,178,863.80x = 15,268,295.70 × 8,584,540.80 - Step 4: Simplify right side
10,178,863.80x = 131,071,307,383,114.56 - Step 5: Solve for x
x = 131,071,307,383,114.56/10,178,863.80 - Step 6: Final answer
x = 12,876,811.20
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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.