Finding the Fourth Proportional to 5,183,998.70, 7,775,998.05 and 1,638,142.70
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Solution
The fourth proportional to 5,183,998.70, 7,775,998.05 and 1,638,142.70 is: 2,457,214.05
Step by Step Solution
- Step 1: Write the proportion equation
5,183,998.70 : 7,775,998.05 = 1,638,142.70 : x - Step 2: Convert to fraction form
5,183,998.70/7,775,998.05 = 1,638,142.70/x - Step 3: Cross multiply
5,183,998.70x = 7,775,998.05 × 1,638,142.70 - Step 4: Simplify right side
5,183,998.70x = 12,738,194,440,821.73 - Step 5: Solve for x
x = 12,738,194,440,821.73/5,183,998.70 - Step 6: Final answer
x = 2,457,214.05
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Similar ratio
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1.5x scale
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.