Finding the Fourth Proportional to 2,485,618.80, 3,430,121.36 and 1,397,890.08
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Solution
The fourth proportional to 2,485,618.80, 3,430,121.36 and 1,397,890.08 is: 1,929,069.99
Step by Step Solution
- Step 1: Write the proportion equation
2,485,618.80 : 3,430,121.36 = 1,397,890.08 : x - Step 2: Convert to fraction form
2,485,618.80/3,430,121.36 = 1,397,890.08/x - Step 3: Cross multiply
2,485,618.80x = 3,430,121.36 × 1,397,890.08 - Step 4: Simplify right side
2,485,618.80x = 4,794,932,622,340.11 - Step 5: Solve for x
x = 4,794,932,622,340.11/2,485,618.80 - Step 6: Final answer
x = 1,929,069.99
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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.