Finding the Fourth Proportional to 782,153.75, 1,079,372.18 and 424,457.75
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Solution
The fourth proportional to 782,153.75, 1,079,372.18 and 424,457.75 is: 585,751.70
Step by Step Solution
- Step 1: Write the proportion equation
782,153.75 : 1,079,372.18 = 424,457.75 : x - Step 2: Convert to fraction form
782,153.75/1,079,372.18 = 424,457.75/x - Step 3: Cross multiply
782,153.75x = 1,079,372.18 × 424,457.75 - Step 4: Simplify right side
782,153.75x = 458,147,886,935.40 - Step 5: Solve for x
x = 458,147,886,935.40/782,153.75 - Step 6: Final answer
x = 585,751.70
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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.