Finding the Fourth Proportional to 689,201.20, 1,033,378.44 and 267,986.08
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Solution
The fourth proportional to 689,201.20, 1,033,378.44 and 267,986.08 is: 401,814.50
Step by Step Solution
- Step 1: Write the proportion equation
689,201.20 : 1,033,378.44 = 267,986.08 : x - Step 2: Convert to fraction form
689,201.20/1,033,378.44 = 267,986.08/x - Step 3: Cross multiply
689,201.20x = 1,033,378.44 × 267,986.08 - Step 4: Simplify right side
689,201.20x = 276,931,037,292.12 - Step 5: Solve for x
x = 276,931,037,292.12/689,201.20 - Step 6: Final answer
x = 401,814.50
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1.5x scale
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.