Finding the Fourth Proportional to 3,898,471.68, 5,379,961.68 and 2,179,408.68
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Solution
The fourth proportional to 3,898,471.68, 5,379,961.68 and 2,179,408.68 is: 3,007,623.54
Step by Step Solution
- Step 1: Write the proportion equation
3,898,471.68 : 5,379,961.68 = 2,179,408.68 : x - Step 2: Convert to fraction form
3,898,471.68/5,379,961.68 = 2,179,408.68/x - Step 3: Cross multiply
3,898,471.68x = 5,379,961.68 × 2,179,408.68 - Step 4: Simplify right side
3,898,471.68x = 11,725,135,183,459.38 - Step 5: Solve for x
x = 11,725,135,183,459.38/3,898,471.68 - Step 6: Final answer
x = 3,007,623.54
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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.