Finding the Fourth Proportional to 6,789,121.20, 9,368,973.96 and 3,889,450.80
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Solution
The fourth proportional to 6,789,121.20, 9,368,973.96 and 3,889,450.80 is: 5,367,434.49
Step by Step Solution
- Step 1: Write the proportion equation
6,789,121.20 : 9,368,973.96 = 3,889,450.80 : x - Step 2: Convert to fraction form
6,789,121.20/9,368,973.96 = 3,889,450.80/x - Step 3: Cross multiply
6,789,121.20x = 9,368,973.96 × 3,889,450.80 - Step 4: Simplify right side
6,789,121.20x = 36,440,163,263,901.17 - Step 5: Solve for x
x = 36,440,163,263,901.17/6,789,121.20 - Step 6: Final answer
x = 5,367,434.49
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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.