Finding the Fourth Proportional to 1,717,721.40, 2,576,582.10 and 1,089,420.60
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Solution
The fourth proportional to 1,717,721.40, 2,576,582.10 and 1,089,420.60 is: 1,634,130.90
Step by Step Solution
- Step 1: Write the proportion equation
1,717,721.40 : 2,576,582.10 = 1,089,420.60 : x - Step 2: Convert to fraction form
1,717,721.40/2,576,582.10 = 1,089,420.60/x - Step 3: Cross multiply
1,717,721.40x = 2,576,582.10 × 1,089,420.60 - Step 4: Simplify right side
1,717,721.40x = 2,806,981,617,331.26 - Step 5: Solve for x
x = 2,806,981,617,331.26/1,717,721.40 - Step 6: Final answer
x = 1,634,130.90
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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.