Finding the Fourth Proportional to 1,491,734.21, 2,237,623.18 and 426,778.20
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Solution
The fourth proportional to 1,491,734.21, 2,237,623.18 and 426,778.20 is: 640,173.56
Step by Step Solution
- Step 1: Write the proportion equation
1,491,734.21 : 2,237,623.18 = 426,778.20 : x - Step 2: Convert to fraction form
1,491,734.21/2,237,623.18 = 426,778.20/x - Step 3: Cross multiply
1,491,734.21x = 2,237,623.18 × 426,778.20 - Step 4: Simplify right side
1,491,734.21x = 954,968,791,971.73 - Step 5: Solve for x
x = 954,968,791,971.73/1,491,734.21 - Step 6: Final answer
x = 640,173.56
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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.