Finding the Fourth Proportional to 782,116.75, 1,079,321.12 and 424,420.75
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Solution
The fourth proportional to 782,116.75, 1,079,321.12 and 424,420.75 is: 585,700.64
Step by Step Solution
- Step 1: Write the proportion equation
782,116.75 : 1,079,321.12 = 424,420.75 : x - Step 2: Convert to fraction form
782,116.75/1,079,321.12 = 424,420.75/x - Step 3: Cross multiply
782,116.75x = 1,079,321.12 × 424,420.75 - Step 4: Simplify right side
782,116.75x = 458,086,279,241.24 - Step 5: Solve for x
x = 458,086,279,241.24/782,116.75 - Step 6: Final answer
x = 585,700.64
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1.5x scale
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.