Finding the Fourth Proportional to 1,405,268.10, 2,107,683.45 and 394,290.90
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Solution
The fourth proportional to 1,405,268.10, 2,107,683.45 and 394,290.90 is: 591,374.99
Step by Step Solution
- Step 1: Write the proportion equation
1,405,268.10 : 2,107,683.45 = 394,290.90 : x - Step 2: Convert to fraction form
1,405,268.10/2,107,683.45 = 394,290.90/x - Step 3: Cross multiply
1,405,268.10x = 2,107,683.45 × 394,290.90 - Step 4: Simplify right side
1,405,268.10x = 831,040,404,415.61 - Step 5: Solve for x
x = 831,040,404,415.61/1,405,268.10 - Step 6: Final answer
x = 591,374.99
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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.