Finding the Fourth Proportional to 1,138,970.99, 1,571,782.79 and 622,758.19
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Solution
The fourth proportional to 1,138,970.99, 1,571,782.79 and 622,758.19 is: 859,407.85
Step by Step Solution
- Step 1: Write the proportion equation
1,138,970.99 : 1,571,782.79 = 622,758.19 : x - Step 2: Convert to fraction form
1,138,970.99/1,571,782.79 = 622,758.19/x - Step 3: Cross multiply
1,138,970.99x = 1,571,782.79 × 622,758.19 - Step 4: Simplify right side
1,138,970.99x = 978,840,605,373.55 - Step 5: Solve for x
x = 978,840,605,373.55/1,138,970.99 - Step 6: Final answer
x = 859,407.85
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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.