Finding the Fourth Proportional to 1,138,971.99, 1,571,784.17 and 622,759.19
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Solution
The fourth proportional to 1,138,971.99, 1,571,784.17 and 622,759.19 is: 859,409.23
Step by Step Solution
- Step 1: Write the proportion equation
1,138,971.99 : 1,571,784.17 = 622,759.19 : x - Step 2: Convert to fraction form
1,138,971.99/1,571,784.17 = 622,759.19/x - Step 3: Cross multiply
1,138,971.99x = 1,571,784.17 × 622,759.19 - Step 4: Simplify right side
1,138,971.99x = 978,843,036,564.02 - Step 5: Solve for x
x = 978,843,036,564.02/1,138,971.99 - Step 6: Final answer
x = 859,409.23
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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.