Finding the Fourth Proportional to 766,478.62, 1,057,823.85 and 422,350.12
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Solution
The fourth proportional to 766,478.62, 1,057,823.85 and 422,350.12 is: 582,889.10
Step by Step Solution
- Step 1: Write the proportion equation
766,478.62 : 1,057,823.85 = 422,350.12 : x - Step 2: Convert to fraction form
766,478.62/1,057,823.85 = 422,350.12/x - Step 3: Cross multiply
766,478.62x = 1,057,823.85 × 422,350.12 - Step 4: Simplify right side
766,478.62x = 446,772,029,986.36 - Step 5: Solve for x
x = 446,772,029,986.36/766,478.62 - Step 6: Final answer
x = 582,889.10
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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.