Finding the Fourth Proportional to 12,128,010.70, 18,194,640.45 and 3,609,208.30
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Solution
The fourth proportional to 12,128,010.70, 18,194,640.45 and 3,609,208.30 is: 5,414,593.45
Step by Step Solution
- Step 1: Write the proportion equation
12,128,010.70 : 18,194,640.45 = 3,609,208.30 : x - Step 2: Convert to fraction form
12,128,010.70/18,194,640.45 = 3,609,208.30/x - Step 3: Cross multiply
12,128,010.70x = 18,194,640.45 × 3,609,208.30 - Step 4: Simplify right side
12,128,010.70x = 65,668,247,327,655.73 - Step 5: Solve for x
x = 65,668,247,327,655.73/12,128,010.70 - Step 6: Final answer
x = 5,414,593.45
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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.