Finding the Fourth Proportional to 8,305,124.70, 12,457,687.05 and 8,137,163.10
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Solution
The fourth proportional to 8,305,124.70, 12,457,687.05 and 8,137,163.10 is: 12,205,744.65
Step by Step Solution
- Step 1: Write the proportion equation
8,305,124.70 : 12,457,687.05 = 8,137,163.10 : x - Step 2: Convert to fraction form
8,305,124.70/12,457,687.05 = 8,137,163.10/x - Step 3: Cross multiply
8,305,124.70x = 12,457,687.05 × 8,137,163.10 - Step 4: Simplify right side
8,305,124.70x = 101,370,231,374,607.86 - Step 5: Solve for x
x = 101,370,231,374,607.86/8,305,124.70 - Step 6: Final answer
x = 12,205,744.65
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Double scale
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Similar ratio
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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.