Finding the Fourth Proportional to 770,428.74, 1,063,220.70 and 421,592.58
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Solution
The fourth proportional to 770,428.74, 1,063,220.70 and 421,592.58 is: 581,813.65
Step by Step Solution
- Step 1: Write the proportion equation
770,428.74 : 1,063,220.70 = 421,592.58 : x - Step 2: Convert to fraction form
770,428.74/1,063,220.70 = 421,592.58/x - Step 3: Cross multiply
770,428.74x = 1,063,220.70 × 421,592.58 - Step 4: Simplify right side
770,428.74x = 448,245,958,022.41 - Step 5: Solve for x
x = 448,245,958,022.41/770,428.74 - Step 6: Final answer
x = 581,813.65
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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.