Finding the Fourth Proportional to 2,421,206.87, 3,340,974.75 and 1,388,660.99
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Solution
The fourth proportional to 2,421,206.87, 3,340,974.75 and 1,388,660.99 is: 1,916,185.42
Step by Step Solution
- Step 1: Write the proportion equation
2,421,206.87 : 3,340,974.75 = 1,388,660.99 : x - Step 2: Convert to fraction form
2,421,206.87/3,340,974.75 = 1,388,660.99/x - Step 3: Cross multiply
2,421,206.87x = 3,340,974.75 × 1,388,660.99 - Step 4: Simplify right side
2,421,206.87x = 4,639,481,303,900.00 - Step 5: Solve for x
x = 4,639,481,303,900.00/2,421,206.87 - Step 6: Final answer
x = 1,916,185.42
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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.