Finding the Fourth Proportional to 1,188,239.96, 1,639,771.56 and 644,375.58
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Solution
The fourth proportional to 1,188,239.96, 1,639,771.56 and 644,375.58 is: 889,238.53
Step by Step Solution
- Step 1: Write the proportion equation
1,188,239.96 : 1,639,771.56 = 644,375.58 : x - Step 2: Convert to fraction form
1,188,239.96/1,639,771.56 = 644,375.58/x - Step 3: Cross multiply
1,188,239.96x = 1,639,771.56 × 644,375.58 - Step 4: Simplify right side
1,188,239.96x = 1,056,628,750,042.50 - Step 5: Solve for x
x = 1,056,628,750,042.50/1,188,239.96 - Step 6: Final answer
x = 889,238.53
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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.