Finding the Fourth Proportional to 1,343,397.20, 2,012,471.40 and 809,331.80
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Solution
The fourth proportional to 1,343,397.20, 2,012,471.40 and 809,331.80 is: 1,212,416.63
Step by Step Solution
- Step 1: Write the proportion equation
1,343,397.20 : 2,012,471.40 = 809,331.80 : x - Step 2: Convert to fraction form
1,343,397.20/2,012,471.40 = 809,331.80/x - Step 3: Cross multiply
1,343,397.20x = 2,012,471.40 × 809,331.80 - Step 4: Simplify right side
1,343,397.20x = 1,628,757,100,610.52 - Step 5: Solve for x
x = 1,628,757,100,610.52/1,343,397.20 - Step 6: Final answer
x = 1,212,416.63
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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.