Finding the Fourth Proportional to 1,138,969.99, 1,571,781.41 and 622,757.19
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Solution
The fourth proportional to 1,138,969.99, 1,571,781.41 and 622,757.19 is: 859,406.47
Step by Step Solution
- Step 1: Write the proportion equation
1,138,969.99 : 1,571,781.41 = 622,757.19 : x - Step 2: Convert to fraction form
1,138,969.99/1,571,781.41 = 622,757.19/x - Step 3: Cross multiply
1,138,969.99x = 1,571,781.41 × 622,757.19 - Step 4: Simplify right side
1,138,969.99x = 978,838,174,185.84 - Step 5: Solve for x
x = 978,838,174,185.84/1,138,969.99 - Step 6: Final answer
x = 859,406.47
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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.