Finding the Fourth Proportional to 1,329,107.20, 1,994,121.60 and 581,689.60
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Solution
The fourth proportional to 1,329,107.20, 1,994,121.60 and 581,689.60 is: 872,736.07
Step by Step Solution
- Step 1: Write the proportion equation
1,329,107.20 : 1,994,121.60 = 581,689.60 : x - Step 2: Convert to fraction form
1,329,107.20/1,994,121.60 = 581,689.60/x - Step 3: Cross multiply
1,329,107.20x = 1,994,121.60 × 581,689.60 - Step 4: Simplify right side
1,329,107.20x = 1,159,959,795,855.36 - Step 5: Solve for x
x = 1,159,959,795,855.36/1,329,107.20 - Step 6: Final answer
x = 872,736.07
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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.