Finding the Fourth Proportional to 579,433.20, 869,149.80 and 486,121.20
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Solution
The fourth proportional to 579,433.20, 869,149.80 and 486,121.20 is: 729,181.80
Step by Step Solution
- Step 1: Write the proportion equation
579,433.20 : 869,149.80 = 486,121.20 : x - Step 2: Convert to fraction form
579,433.20/869,149.80 = 486,121.20/x - Step 3: Cross multiply
579,433.20x = 869,149.80 × 486,121.20 - Step 4: Simplify right side
579,433.20x = 422,512,143,755.76 - Step 5: Solve for x
x = 422,512,143,755.76/579,433.20 - Step 6: Final answer
x = 729,181.80
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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.