Finding the Fourth Proportional to 768,122.70, 1,059,713.68 and 481,143.18
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Solution
The fourth proportional to 768,122.70, 1,059,713.68 and 481,143.18 is: 663,792.40
Step by Step Solution
- Step 1: Write the proportion equation
768,122.70 : 1,059,713.68 = 481,143.18 : x - Step 2: Convert to fraction form
768,122.70/1,059,713.68 = 481,143.18/x - Step 3: Cross multiply
768,122.70x = 1,059,713.68 × 481,143.18 - Step 4: Simplify right side
768,122.70x = 509,874,009,884.70 - Step 5: Solve for x
x = 509,874,009,884.70/768,122.70 - Step 6: Final answer
x = 663,792.40
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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.