Finding the Fourth Proportional to 6,321,456.21, 8,723,609.60 and 3,420,847.11
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Solution
The fourth proportional to 6,321,456.21, 8,723,609.60 and 3,420,847.11 is: 4,720,769.03
Step by Step Solution
- Step 1: Write the proportion equation
6,321,456.21 : 8,723,609.60 = 3,420,847.11 : x - Step 2: Convert to fraction form
6,321,456.21/8,723,609.60 = 3,420,847.11/x - Step 3: Cross multiply
6,321,456.21x = 8,723,609.60 × 3,420,847.11 - Step 4: Simplify right side
6,321,456.21x = 29,842,134,688,928.25 - Step 5: Solve for x
x = 29,842,134,688,928.25/6,321,456.21 - Step 6: Final answer
x = 4,720,769.03
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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.