Finding the Fourth Proportional to 1,330,453.80, 1,993,491.90 and 768,508.20
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Solution
The fourth proportional to 1,330,453.80, 1,993,491.90 and 768,508.20 is: 1,151,497.99
Step by Step Solution
- Step 1: Write the proportion equation
1,330,453.80 : 1,993,491.90 = 768,508.20 : x - Step 2: Convert to fraction form
1,330,453.80/1,993,491.90 = 768,508.20/x - Step 3: Cross multiply
1,330,453.80x = 1,993,491.90 × 768,508.20 - Step 4: Simplify right side
1,330,453.80x = 1,532,014,871,783.58 - Step 5: Solve for x
x = 1,532,014,871,783.58/1,330,453.80 - Step 6: Final answer
x = 1,151,497.99
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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.