Finding the Fourth Proportional to 7,122,450.38, 9,828,990.16 and 3,859,262.53
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Solution
The fourth proportional to 7,122,450.38, 9,828,990.16 and 3,859,262.53 is: 5,325,786.97
Step by Step Solution
- Step 1: Write the proportion equation
7,122,450.38 : 9,828,990.16 = 3,859,262.53 : x - Step 2: Convert to fraction form
7,122,450.38/9,828,990.16 = 3,859,262.53/x - Step 3: Cross multiply
7,122,450.38x = 9,828,990.16 × 3,859,262.53 - Step 4: Simplify right side
7,122,450.38x = 37,932,653,398,006.07 - Step 5: Solve for x
x = 37,932,653,398,006.07/7,122,450.38 - Step 6: Final answer
x = 5,325,786.97
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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.