Finding the Fourth Proportional to 3,418,991.55, 5,128,487.33 and 2,621,830.05
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Solution
The fourth proportional to 3,418,991.55, 5,128,487.33 and 2,621,830.05 is: 3,932,745.08
Step by Step Solution
- Step 1: Write the proportion equation
3,418,991.55 : 5,128,487.33 = 2,621,830.05 : x - Step 2: Convert to fraction form
3,418,991.55/5,128,487.33 = 2,621,830.05/x - Step 3: Cross multiply
3,418,991.55x = 5,128,487.33 × 2,621,830.05 - Step 4: Simplify right side
3,418,991.55x = 13,446,022,179,729.12 - Step 5: Solve for x
x = 13,446,022,179,729.12/3,418,991.55 - Step 6: Final answer
x = 3,932,745.08
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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.