Finding the Fourth Proportional to 766,172.82, 1,057,325.61 and 422,009.99
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Solution
The fourth proportional to 766,172.82, 1,057,325.61 and 422,009.99 is: 582,377.71
Step by Step Solution
- Step 1: Write the proportion equation
766,172.82 : 1,057,325.61 = 422,009.99 : x - Step 2: Convert to fraction form
766,172.82/1,057,325.61 = 422,009.99/x - Step 3: Cross multiply
766,172.82x = 1,057,325.61 × 422,009.99 - Step 4: Simplify right side
766,172.82x = 446,201,970,102.84 - Step 5: Solve for x
x = 446,201,970,102.84/766,172.82 - Step 6: Final answer
x = 582,377.71
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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.