Finding the Fourth Proportional to 3,478,917.12, 4,801,430.40 and 2,121,577.44
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Solution
The fourth proportional to 3,478,917.12, 4,801,430.40 and 2,121,577.44 is: 2,928,096.89
Step by Step Solution
- Step 1: Write the proportion equation
3,478,917.12 : 4,801,430.40 = 2,121,577.44 : x - Step 2: Convert to fraction form
3,478,917.12/4,801,430.40 = 2,121,577.44/x - Step 3: Cross multiply
3,478,917.12x = 4,801,430.40 × 2,121,577.44 - Step 4: Simplify right side
3,478,917.12x = 10,186,606,416,370.18 - Step 5: Solve for x
x = 10,186,606,416,370.18/3,478,917.12 - Step 6: Final answer
x = 2,928,096.89
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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.