Finding the Fourth Proportional to 1,216,107.44, 1,677,819.12 and 786,930.56
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Solution
The fourth proportional to 1,216,107.44, 1,677,819.12 and 786,930.56 is: 1,085,699.42
Step by Step Solution
- Step 1: Write the proportion equation
1,216,107.44 : 1,677,819.12 = 786,930.56 : x - Step 2: Convert to fraction form
1,216,107.44/1,677,819.12 = 786,930.56/x - Step 3: Cross multiply
1,216,107.44x = 1,677,819.12 × 786,930.56 - Step 4: Simplify right side
1,216,107.44x = 1,320,327,139,680.31 - Step 5: Solve for x
x = 1,320,327,139,680.31/1,216,107.44 - Step 6: Final answer
x = 1,085,699.42
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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.