Finding the Fourth Proportional to 457,812.75, 631,781.60 and 256,608.75
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Solution
The fourth proportional to 457,812.75, 631,781.60 and 256,608.75 is: 354,120.08
Step by Step Solution
- Step 1: Write the proportion equation
457,812.75 : 631,781.60 = 256,608.75 : x - Step 2: Convert to fraction form
457,812.75/631,781.60 = 256,608.75/x - Step 3: Cross multiply
457,812.75x = 631,781.60 × 256,608.75 - Step 4: Simplify right side
457,812.75x = 162,120,685,365.96 - Step 5: Solve for x
x = 162,120,685,365.96/457,812.75 - Step 6: Final answer
x = 354,120.08
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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.