Finding the Fourth Proportional to 1,212,107.98, 1,672,678.26 and 668,231.20
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Solution
The fourth proportional to 1,212,107.98, 1,672,678.26 and 668,231.20 is: 922,142.10
Step by Step Solution
- Step 1: Write the proportion equation
1,212,107.98 : 1,672,678.26 = 668,231.20 : x - Step 2: Convert to fraction form
1,212,107.98/1,672,678.26 = 668,231.20/x - Step 3: Cross multiply
1,212,107.98x = 1,672,678.26 × 668,231.20 - Step 4: Simplify right side
1,212,107.98x = 1,117,735,800,893.71 - Step 5: Solve for x
x = 1,117,735,800,893.71/1,212,107.98 - Step 6: Final answer
x = 922,142.10
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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.