Finding the Fourth Proportional to 1,660,937.80, 2,491,406.70 and 821,129.80
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Solution
The fourth proportional to 1,660,937.80, 2,491,406.70 and 821,129.80 is: 1,231,694.70
Step by Step Solution
- Step 1: Write the proportion equation
1,660,937.80 : 2,491,406.70 = 821,129.80 : x - Step 2: Convert to fraction form
1,660,937.80/2,491,406.70 = 821,129.80/x - Step 3: Cross multiply
1,660,937.80x = 2,491,406.70 × 821,129.80 - Step 4: Simplify right side
1,660,937.80x = 2,045,768,285,289.66 - Step 5: Solve for x
x = 2,045,768,285,289.66/1,660,937.80 - Step 6: Final answer
x = 1,231,694.70
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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.