Finding the Fourth Proportional to 1,981,428.10, 2,735,207.80 and 1,337,720.18
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Solution
The fourth proportional to 1,981,428.10, 2,735,207.80 and 1,337,720.18 is: 1,846,618.95
Step by Step Solution
- Step 1: Write the proportion equation
1,981,428.10 : 2,735,207.80 = 1,337,720.18 : x - Step 2: Convert to fraction form
1,981,428.10/2,735,207.80 = 1,337,720.18/x - Step 3: Cross multiply
1,981,428.10x = 2,735,207.80 × 1,337,720.18 - Step 4: Simplify right side
1,981,428.10x = 3,658,942,670,553.40 - Step 5: Solve for x
x = 3,658,942,670,553.40/1,981,428.10 - Step 6: Final answer
x = 1,846,618.95
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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.