Finding the Fourth Proportional to 3,988,262.45, 5,981,138.87 and 1,291,962.09
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Solution
The fourth proportional to 3,988,262.45, 5,981,138.87 and 1,291,962.09 is: 1,937,536.65
Step by Step Solution
- Step 1: Write the proportion equation
3,988,262.45 : 5,981,138.87 = 1,291,962.09 : x - Step 2: Convert to fraction form
3,988,262.45/5,981,138.87 = 1,291,962.09/x - Step 3: Cross multiply
3,988,262.45x = 5,981,138.87 × 1,291,962.09 - Step 4: Simplify right side
3,988,262.45x = 7,727,404,678,295.34 - Step 5: Solve for x
x = 7,727,404,678,295.34/3,988,262.45 - Step 6: Final answer
x = 1,937,536.65
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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.