Finding the Fourth Proportional to 1,421,129.23, 1,961,163.44 and 776,549.41
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Solution
The fourth proportional to 1,421,129.23, 1,961,163.44 and 776,549.41 is: 1,071,640.97
Step by Step Solution
- Step 1: Write the proportion equation
1,421,129.23 : 1,961,163.44 = 776,549.41 : x - Step 2: Convert to fraction form
1,421,129.23/1,961,163.44 = 776,549.41/x - Step 3: Cross multiply
1,421,129.23x = 1,961,163.44 × 776,549.41 - Step 4: Simplify right side
1,421,129.23x = 1,522,940,312,245.57 - Step 5: Solve for x
x = 1,522,940,312,245.57/1,421,129.23 - Step 6: Final answer
x = 1,071,640.97
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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.