Finding the Fourth Proportional to 1,987,873.84, 2,982,287.40 and 640,163.44
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Solution
The fourth proportional to 1,987,873.84, 2,982,287.40 and 640,163.44 is: 960,398.65
Step by Step Solution
- Step 1: Write the proportion equation
1,987,873.84 : 2,982,287.40 = 640,163.44 : x - Step 2: Convert to fraction form
1,987,873.84/2,982,287.40 = 640,163.44/x - Step 3: Cross multiply
1,987,873.84x = 2,982,287.40 × 640,163.44 - Step 4: Simplify right side
1,987,873.84x = 1,909,151,361,052.66 - Step 5: Solve for x
x = 1,909,151,361,052.66/1,987,873.84 - Step 6: Final answer
x = 960,398.65
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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.