Finding the Fourth Proportional to 789,383.97, 1,089,325.08 and 445,325.13
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Solution
The fourth proportional to 789,383.97, 1,089,325.08 and 445,325.13 is: 614,534.69
Step by Step Solution
- Step 1: Write the proportion equation
789,383.97 : 1,089,325.08 = 445,325.13 : x - Step 2: Convert to fraction form
789,383.97/1,089,325.08 = 445,325.13/x - Step 3: Cross multiply
789,383.97x = 1,089,325.08 × 445,325.13 - Step 4: Simplify right side
789,383.97x = 485,103,832,863.26 - Step 5: Solve for x
x = 485,103,832,863.26/789,383.97 - Step 6: Final answer
x = 614,534.69
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Double scale
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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.