Finding the Fourth Proportional to 1,293,137.80, 1,939,706.70 and 394,577.80
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Solution
The fourth proportional to 1,293,137.80, 1,939,706.70 and 394,577.80 is: 591,866.70
Step by Step Solution
- Step 1: Write the proportion equation
1,293,137.80 : 1,939,706.70 = 394,577.80 : x - Step 2: Convert to fraction form
1,293,137.80/1,939,706.70 = 394,577.80/x - Step 3: Cross multiply
1,293,137.80x = 1,939,706.70 × 394,577.80 - Step 4: Simplify right side
1,293,137.80x = 765,365,202,331.26 - Step 5: Solve for x
x = 765,365,202,331.26/1,293,137.80 - Step 6: Final answer
x = 591,866.70
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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.