Finding the Fourth Proportional to 641,801.75, 961,283.58 and 438,917.03
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Solution
The fourth proportional to 641,801.75, 961,283.58 and 438,917.03 is: 657,405.09
Step by Step Solution
- Step 1: Write the proportion equation
641,801.75 : 961,283.58 = 438,917.03 : x - Step 2: Convert to fraction form
641,801.75/961,283.58 = 438,917.03/x - Step 3: Cross multiply
641,801.75x = 961,283.58 × 438,917.03 - Step 4: Simplify right side
641,801.75x = 421,923,734,269.70 - Step 5: Solve for x
x = 421,923,734,269.70/641,801.75 - Step 6: Final answer
x = 657,405.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.