Finding the Fourth Proportional to 764,367.36, 1,054,840.41 and 420,217.80
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Solution
The fourth proportional to 764,367.36, 1,054,840.41 and 420,217.80 is: 579,907.96
Step by Step Solution
- Step 1: Write the proportion equation
764,367.36 : 1,054,840.41 = 420,217.80 : x - Step 2: Convert to fraction form
764,367.36/1,054,840.41 = 420,217.80/x - Step 3: Cross multiply
764,367.36x = 1,054,840.41 × 420,217.80 - Step 4: Simplify right side
764,367.36x = 443,262,716,441.30 - Step 5: Solve for x
x = 443,262,716,441.30/764,367.36 - Step 6: Final answer
x = 579,907.96
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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.