Finding the Fourth Proportional to 8,939,821.20, 13,409,731.80 and 3,260,230.80
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Solution
The fourth proportional to 8,939,821.20, 13,409,731.80 and 3,260,230.80 is: 4,890,346.20
Step by Step Solution
- Step 1: Write the proportion equation
8,939,821.20 : 13,409,731.80 = 3,260,230.80 : x - Step 2: Convert to fraction form
8,939,821.20/13,409,731.80 = 3,260,230.80/x - Step 3: Cross multiply
8,939,821.20x = 13,409,731.80 × 3,260,230.80 - Step 4: Simplify right side
8,939,821.20x = 43,718,820,634,099.44 - Step 5: Solve for x
x = 43,718,820,634,099.44/8,939,821.20 - Step 6: Final answer
x = 4,890,346.20
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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.