Finding the Fourth Proportional to 1,320,558.21, 1,822,804.43 and 776,670.75
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Solution
The fourth proportional to 1,320,558.21, 1,822,804.43 and 776,670.75 is: 1,072,060.94
Step by Step Solution
- Step 1: Write the proportion equation
1,320,558.21 : 1,822,804.43 = 776,670.75 : x - Step 2: Convert to fraction form
1,320,558.21/1,822,804.43 = 776,670.75/x - Step 3: Cross multiply
1,320,558.21x = 1,822,804.43 × 776,670.75 - Step 4: Simplify right side
1,320,558.21x = 1,415,718,879,868.07 - Step 5: Solve for x
x = 1,415,718,879,868.07/1,320,558.21 - Step 6: Final answer
x = 1,072,060.94
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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.