Finding the Fourth Proportional to 789,171.21, 1,089,122.99 and 483,246.09
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Solution
The fourth proportional to 789,171.21, 1,089,122.99 and 483,246.09 is: 666,920.46
Step by Step Solution
- Step 1: Write the proportion equation
789,171.21 : 1,089,122.99 = 483,246.09 : x - Step 2: Convert to fraction form
789,171.21/1,089,122.99 = 483,246.09/x - Step 3: Cross multiply
789,171.21x = 1,089,122.99 × 483,246.09 - Step 4: Simplify right side
789,171.21x = 526,314,424,030.38 - Step 5: Solve for x
x = 526,314,424,030.38/789,171.21 - Step 6: Final answer
x = 666,920.46
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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.