Finding the Fourth Proportional to 656,313.75, 905,713.11 and 354,507.75
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Solution
The fourth proportional to 656,313.75, 905,713.11 and 354,507.75 is: 489,220.77
Step by Step Solution
- Step 1: Write the proportion equation
656,313.75 : 905,713.11 = 354,507.75 : x - Step 2: Convert to fraction form
656,313.75/905,713.11 = 354,507.75/x - Step 3: Cross multiply
656,313.75x = 905,713.11 × 354,507.75 - Step 4: Simplify right side
656,313.75x = 321,082,316,771.60 - Step 5: Solve for x
x = 321,082,316,771.60/656,313.75 - Step 6: Final answer
x = 489,220.77
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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.