Finding the Fourth Proportional to 554,634.76, 765,396.12 and 312,968.56
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Solution
The fourth proportional to 554,634.76, 765,396.12 and 312,968.56 is: 431,896.70
Step by Step Solution
- Step 1: Write the proportion equation
554,634.76 : 765,396.12 = 312,968.56 : x - Step 2: Convert to fraction form
554,634.76/765,396.12 = 312,968.56/x - Step 3: Cross multiply
554,634.76x = 765,396.12 × 312,968.56 - Step 4: Simplify right side
554,634.76x = 239,544,921,505.99 - Step 5: Solve for x
x = 239,544,921,505.99/554,634.76 - Step 6: Final answer
x = 431,896.70
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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.