Finding the Fourth Proportional to 1,420,576.43, 2,130,850.06 and 821,156.18
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Solution
The fourth proportional to 1,420,576.43, 2,130,850.06 and 821,156.18 is: 1,231,725.83
Step by Step Solution
- Step 1: Write the proportion equation
1,420,576.43 : 2,130,850.06 = 821,156.18 : x - Step 2: Convert to fraction form
1,420,576.43/2,130,850.06 = 821,156.18/x - Step 3: Cross multiply
1,420,576.43x = 2,130,850.06 × 821,156.18 - Step 4: Simplify right side
1,420,576.43x = 1,749,760,682,715.23 - Step 5: Solve for x
x = 1,749,760,682,715.23/1,420,576.43 - Step 6: Final answer
x = 1,231,725.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.