Finding the Fourth Proportional to 1,421,268.97, 1,961,356.29 and 776,689.22
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Solution
The fourth proportional to 1,421,268.97, 1,961,356.29 and 776,689.22 is: 1,071,833.92
Step by Step Solution
- Step 1: Write the proportion equation
1,421,268.97 : 1,961,356.29 = 776,689.22 : x - Step 2: Convert to fraction form
1,421,268.97/1,961,356.29 = 776,689.22/x - Step 3: Cross multiply
1,421,268.97x = 1,961,356.29 × 776,689.22 - Step 4: Simplify right side
1,421,268.97x = 1,523,364,287,022.19 - Step 5: Solve for x
x = 1,523,364,287,022.19/1,421,268.97 - Step 6: Final answer
x = 1,071,833.92
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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.