Finding the Fourth Proportional to 5,431,231.20, 8,151,512.40 and 2,403,256.80
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Solution
The fourth proportional to 5,431,231.20, 8,151,512.40 and 2,403,256.80 is: 3,606,949.67
Step by Step Solution
- Step 1: Write the proportion equation
5,431,231.20 : 8,151,512.40 = 2,403,256.80 : x - Step 2: Convert to fraction form
5,431,231.20/8,151,512.40 = 2,403,256.80/x - Step 3: Cross multiply
5,431,231.20x = 8,151,512.40 × 2,403,256.80 - Step 4: Simplify right side
5,431,231.20x = 19,590,177,605,584.32 - Step 5: Solve for x
x = 19,590,177,605,584.32/5,431,231.20 - Step 6: Final answer
x = 3,606,949.67
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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.