Finding the Fourth Proportional to 2,420,936.91, 3,340,903.86 and 1,388,485.26
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Solution
The fourth proportional to 2,420,936.91, 3,340,903.86 and 1,388,485.26 is: 1,916,115.92
Step by Step Solution
- Step 1: Write the proportion equation
2,420,936.91 : 3,340,903.86 = 1,388,485.26 : x - Step 2: Convert to fraction form
2,420,936.91/3,340,903.86 = 1,388,485.26/x - Step 3: Cross multiply
2,420,936.91x = 3,340,903.86 × 1,388,485.26 - Step 4: Simplify right side
2,420,936.91x = 4,638,795,764,687.10 - Step 5: Solve for x
x = 4,638,795,764,687.10/2,420,936.91 - Step 6: Final answer
x = 1,916,115.92
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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.