Finding the Fourth Proportional to 3,899,442.80, 5,381,194.20 and 2,180,543.60
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Solution
The fourth proportional to 3,899,442.80, 5,381,194.20 and 2,180,543.60 is: 3,009,129.55
Step by Step Solution
- Step 1: Write the proportion equation
3,899,442.80 : 5,381,194.20 = 2,180,543.60 : x - Step 2: Convert to fraction form
3,899,442.80/5,381,194.20 = 2,180,543.60/x - Step 3: Cross multiply
3,899,442.80x = 5,381,194.20 × 2,180,543.60 - Step 4: Simplify right side
3,899,442.80x = 11,733,928,573,167.12 - Step 5: Solve for x
x = 11,733,928,573,167.12/3,899,442.80 - Step 6: Final answer
x = 3,009,129.55
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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.