Finding the Fourth Proportional to 3,478,879.20, 5,210,445.60 and 2,203,420.80
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Solution
The fourth proportional to 3,478,879.20, 5,210,445.60 and 2,203,420.80 is: 3,300,144.54
Step by Step Solution
- Step 1: Write the proportion equation
3,478,879.20 : 5,210,445.60 = 2,203,420.80 : x - Step 2: Convert to fraction form
3,478,879.20/5,210,445.60 = 2,203,420.80/x - Step 3: Cross multiply
3,478,879.20x = 5,210,445.60 × 2,203,420.80 - Step 4: Simplify right side
3,478,879.20x = 11,480,804,212,308.48 - Step 5: Solve for x
x = 11,480,804,212,308.48/3,478,879.20 - Step 6: Final answer
x = 3,300,144.54
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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.