Finding the Fourth Proportional to 2,112,840.36, 2,915,759.40 and 1,296,635.48
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Solution
The fourth proportional to 2,112,840.36, 2,915,759.40 and 1,296,635.48 is: 1,789,381.33
Step by Step Solution
- Step 1: Write the proportion equation
2,112,840.36 : 2,915,759.40 = 1,296,635.48 : x - Step 2: Convert to fraction form
2,112,840.36/2,915,759.40 = 1,296,635.48/x - Step 3: Cross multiply
2,112,840.36x = 2,915,759.40 × 1,296,635.48 - Step 4: Simplify right side
2,112,840.36x = 3,780,677,089,183.51 - Step 5: Solve for x
x = 3,780,677,089,183.51/2,112,840.36 - Step 6: Final answer
x = 1,789,381.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.