Finding the Fourth Proportional to 8,081,623.80, 12,122,435.70 and 6,646,733.10
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Solution
The fourth proportional to 8,081,623.80, 12,122,435.70 and 6,646,733.10 is: 9,970,099.65
Step by Step Solution
- Step 1: Write the proportion equation
8,081,623.80 : 12,122,435.70 = 6,646,733.10 : x - Step 2: Convert to fraction form
8,081,623.80/12,122,435.70 = 6,646,733.10/x - Step 3: Cross multiply
8,081,623.80x = 12,122,435.70 × 6,646,733.10 - Step 4: Simplify right side
8,081,623.80x = 80,574,594,619,811.66 - Step 5: Solve for x
x = 80,574,594,619,811.66/8,081,623.80 - Step 6: Final answer
x = 9,970,099.65
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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.