Finding the Fourth Proportional to 743,988.97, 1,026,785.06 and 421,664.47
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Solution
The fourth proportional to 743,988.97, 1,026,785.06 and 421,664.47 is: 581,942.47
Step by Step Solution
- Step 1: Write the proportion equation
743,988.97 : 1,026,785.06 = 421,664.47 : x - Step 2: Convert to fraction form
743,988.97/1,026,785.06 = 421,664.47/x - Step 3: Cross multiply
743,988.97x = 1,026,785.06 × 421,664.47 - Step 4: Simplify right side
743,988.97x = 432,958,775,034.78 - Step 5: Solve for x
x = 432,958,775,034.78/743,988.97 - Step 6: Final answer
x = 581,942.47
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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.