Finding the Fourth Proportional to 642,825.78, 887,107.59 and 370,950.09
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Solution
The fourth proportional to 642,825.78, 887,107.59 and 370,950.09 is: 511,915.75
Step by Step Solution
- Step 1: Write the proportion equation
642,825.78 : 887,107.59 = 370,950.09 : x - Step 2: Convert to fraction form
642,825.78/887,107.59 = 370,950.09/x - Step 3: Cross multiply
642,825.78x = 887,107.59 × 370,950.09 - Step 4: Simplify right side
642,825.78x = 329,072,640,350.18 - Step 5: Solve for x
x = 329,072,640,350.18/642,825.78 - Step 6: Final answer
x = 511,915.75
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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.