Finding the Fourth Proportional to 8,231,699.80, 12,347,549.70 and 8,074,235.80
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Solution
The fourth proportional to 8,231,699.80, 12,347,549.70 and 8,074,235.80 is: 12,111,353.70
Step by Step Solution
- Step 1: Write the proportion equation
8,231,699.80 : 12,347,549.70 = 8,074,235.80 : x - Step 2: Convert to fraction form
8,231,699.80/12,347,549.70 = 8,074,235.80/x - Step 3: Cross multiply
8,231,699.80x = 12,347,549.70 × 8,074,235.80 - Step 4: Simplify right side
8,231,699.80x = 99,697,027,830,019.25 - Step 5: Solve for x
x = 99,697,027,830,019.25/8,231,699.80 - Step 6: Final answer
x = 12,111,353.70
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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.