Finding the Fourth Proportional to 682,432.80, 1,023,697.80 and 209,117.40
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Solution
The fourth proportional to 682,432.80, 1,023,697.80 and 209,117.40 is: 313,690.99
Step by Step Solution
- Step 1: Write the proportion equation
682,432.80 : 1,023,697.80 = 209,117.40 : x - Step 2: Convert to fraction form
682,432.80/1,023,697.80 = 209,117.40/x - Step 3: Cross multiply
682,432.80x = 1,023,697.80 × 209,117.40 - Step 4: Simplify right side
682,432.80x = 214,073,022,321.72 - Step 5: Solve for x
x = 214,073,022,321.72/682,432.80 - Step 6: Final answer
x = 313,690.99
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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.