Finding the Fourth Proportional to 6,940,983.99, 9,578,491.20 and 3,999,720.51
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Solution
The fourth proportional to 6,940,983.99, 9,578,491.20 and 3,999,720.51 is: 5,519,575.86
Step by Step Solution
- Step 1: Write the proportion equation
6,940,983.99 : 9,578,491.20 = 3,999,720.51 : x - Step 2: Convert to fraction form
6,940,983.99/9,578,491.20 = 3,999,720.51/x - Step 3: Cross multiply
6,940,983.99x = 9,578,491.20 × 3,999,720.51 - Step 4: Simplify right side
6,940,983.99x = 38,311,287,707,494.51 - Step 5: Solve for x
x = 38,311,287,707,494.51/6,940,983.99 - Step 6: Final answer
x = 5,519,575.86
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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.