Finding the Fourth Proportional to 1,122,571.82, 1,549,220.46 and 639,179.18
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Solution
The fourth proportional to 1,122,571.82, 1,549,220.46 and 639,179.18 is: 882,107.89
Step by Step Solution
- Step 1: Write the proportion equation
1,122,571.82 : 1,549,220.46 = 639,179.18 : x - Step 2: Convert to fraction form
1,122,571.82/1,549,220.46 = 639,179.18/x - Step 3: Cross multiply
1,122,571.82x = 1,549,220.46 × 639,179.18 - Step 4: Simplify right side
1,122,571.82x = 990,229,463,262.02 - Step 5: Solve for x
x = 990,229,463,262.02/1,122,571.82 - Step 6: Final answer
x = 882,107.89
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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.