Finding the Fourth Proportional to 1,212,979.95, 1,674,450.50 and 783,469.62
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Solution
The fourth proportional to 1,212,979.95, 1,674,450.50 and 783,469.62 is: 1,081,535.68
Step by Step Solution
- Step 1: Write the proportion equation
1,212,979.95 : 1,674,450.50 = 783,469.62 : x - Step 2: Convert to fraction form
1,212,979.95/1,674,450.50 = 783,469.62/x - Step 3: Cross multiply
1,212,979.95x = 1,674,450.50 × 783,469.62 - Step 4: Simplify right side
1,212,979.95x = 1,311,881,093,026.46 - Step 5: Solve for x
x = 1,311,881,093,026.46/1,212,979.95 - Step 6: Final answer
x = 1,081,535.68
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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.