Finding the Fourth Proportional to 12,530,431.76, 18,795,664.12 and 3,432,610.22
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Solution
The fourth proportional to 12,530,431.76, 18,795,664.12 and 3,432,610.22 is: 5,148,919.84
Step by Step Solution
- Step 1: Write the proportion equation
12,530,431.76 : 18,795,664.12 = 3,432,610.22 : x - Step 2: Convert to fraction form
12,530,431.76/18,795,664.12 = 3,432,610.22/x - Step 3: Cross multiply
12,530,431.76x = 18,795,664.12 × 3,432,610.22 - Step 4: Simplify right side
12,530,431.76x = 64,518,188,749,999.31 - Step 5: Solve for x
x = 64,518,188,749,999.31/12,530,431.76 - Step 6: Final answer
x = 5,148,919.84
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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.