Finding the Fourth Proportional to 1,381,428.27, 1,906,342.29 and 769,580.19
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Solution
The fourth proportional to 1,381,428.27, 1,906,342.29 and 769,580.19 is: 1,062,004.66
Step by Step Solution
- Step 1: Write the proportion equation
1,381,428.27 : 1,906,342.29 = 769,580.19 : x - Step 2: Convert to fraction form
1,381,428.27/1,906,342.29 = 769,580.19/x - Step 3: Cross multiply
1,381,428.27x = 1,906,342.29 × 769,580.19 - Step 4: Simplify right side
1,381,428.27x = 1,467,083,261,743.24 - Step 5: Solve for x
x = 1,467,083,261,743.24/1,381,428.27 - Step 6: Final answer
x = 1,062,004.66
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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.