Finding the Fourth Proportional to 8,783,759.76, 12,120,142.50 and 5,518,263.12
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Solution
The fourth proportional to 8,783,759.76, 12,120,142.50 and 5,518,263.12 is: 7,614,294.70
Step by Step Solution
- Step 1: Write the proportion equation
8,783,759.76 : 12,120,142.50 = 5,518,263.12 : x - Step 2: Convert to fraction form
8,783,759.76/12,120,142.50 = 5,518,263.12/x - Step 3: Cross multiply
8,783,759.76x = 12,120,142.50 × 5,518,263.12 - Step 4: Simplify right side
8,783,759.76x = 66,882,135,366,894.60 - Step 5: Solve for x
x = 66,882,135,366,894.60/8,783,759.76 - Step 6: Final answer
x = 7,614,294.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.