Finding the Fourth Proportional to 1,420,601.87, 2,130,888.22 and 821,181.62
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Solution
The fourth proportional to 1,420,601.87, 2,130,888.22 and 821,181.62 is: 1,231,763.99
Step by Step Solution
- Step 1: Write the proportion equation
1,420,601.87 : 2,130,888.22 = 821,181.62 : x - Step 2: Convert to fraction form
1,420,601.87/2,130,888.22 = 821,181.62/x - Step 3: Cross multiply
1,420,601.87x = 2,130,888.22 × 821,181.62 - Step 4: Simplify right side
1,420,601.87x = 1,749,846,225,778.17 - Step 5: Solve for x
x = 1,749,846,225,778.17/1,420,601.87 - Step 6: Final answer
x = 1,231,763.99
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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.