Finding the Fourth Proportional to 768,099.84, 1,059,977.12 and 428,568.09
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Solution
The fourth proportional to 768,099.84, 1,059,977.12 and 428,568.09 is: 591,423.60
Step by Step Solution
- Step 1: Write the proportion equation
768,099.84 : 1,059,977.12 = 428,568.09 : x - Step 2: Convert to fraction form
768,099.84/1,059,977.12 = 428,568.09/x - Step 3: Cross multiply
768,099.84x = 1,059,977.12 × 428,568.09 - Step 4: Simplify right side
768,099.84x = 454,272,369,762.10 - Step 5: Solve for x
x = 454,272,369,762.10/768,099.84 - Step 6: Final answer
x = 591,423.60
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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.