Finding the Fourth Proportional to 3,988,278.35, 5,981,162.68 and 1,291,977.99
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Solution
The fourth proportional to 3,988,278.35, 5,981,162.68 and 1,291,977.99 is: 1,937,560.49
Step by Step Solution
- Step 1: Write the proportion equation
3,988,278.35 : 5,981,162.68 = 1,291,977.99 : x - Step 2: Convert to fraction form
3,988,278.35/5,981,162.68 = 1,291,977.99/x - Step 3: Cross multiply
3,988,278.35x = 5,981,162.68 × 1,291,977.99 - Step 4: Simplify right side
3,988,278.35x = 7,727,530,537,169.41 - Step 5: Solve for x
x = 7,727,530,537,169.41/3,988,278.35 - Step 6: Final answer
x = 1,937,560.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.