Finding the Fourth Proportional to 1,187,762.73, 1,639,120.97 and 643,907.09
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Solution
The fourth proportional to 1,187,762.73, 1,639,120.97 and 643,907.09 is: 888,596.33
Step by Step Solution
- Step 1: Write the proportion equation
1,187,762.73 : 1,639,120.97 = 643,907.09 : x - Step 2: Convert to fraction form
1,187,762.73/1,639,120.97 = 643,907.09/x - Step 3: Cross multiply
1,187,762.73x = 1,639,120.97 × 643,907.09 - Step 4: Simplify right side
1,187,762.73x = 1,055,441,607,364.84 - Step 5: Solve for x
x = 1,055,441,607,364.84/1,187,762.73 - Step 6: Final answer
x = 888,596.33
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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.