Finding the Fourth Proportional to 853,248.60, 1,279,639.62 and 320,728.68
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Solution
The fourth proportional to 853,248.60, 1,279,639.62 and 320,728.68 is: 481,005.33
Step by Step Solution
- Step 1: Write the proportion equation
853,248.60 : 1,279,639.62 = 320,728.68 : x - Step 2: Convert to fraction form
853,248.60/1,279,639.62 = 320,728.68/x - Step 3: Cross multiply
853,248.60x = 1,279,639.62 × 320,728.68 - Step 4: Simplify right side
853,248.60x = 410,417,126,198.30 - Step 5: Solve for x
x = 410,417,126,198.30/853,248.60 - Step 6: Final answer
x = 481,005.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.