Finding the Fourth Proportional to 789,236.10, 1,089,252.36 and 445,142.70
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Solution
The fourth proportional to 789,236.10, 1,089,252.36 and 445,142.70 is: 614,357.02
Step by Step Solution
- Step 1: Write the proportion equation
789,236.10 : 1,089,252.36 = 445,142.70 : x - Step 2: Convert to fraction form
789,236.10/1,089,252.36 = 445,142.70/x - Step 3: Cross multiply
789,236.10x = 1,089,252.36 × 445,142.70 - Step 4: Simplify right side
789,236.10x = 484,872,736,511.77 - Step 5: Solve for x
x = 484,872,736,511.77/789,236.10 - Step 6: Final answer
x = 614,357.02
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1.5x scale
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.