Finding the Fourth Proportional to 667,331.60, 920,918.81 and 361,407.09
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Solution
The fourth proportional to 667,331.60, 920,918.81 and 361,407.09 is: 498,742.44
Step by Step Solution
- Step 1: Write the proportion equation
667,331.60 : 920,918.81 = 361,407.09 : x - Step 2: Convert to fraction form
667,331.60/920,918.81 = 361,407.09/x - Step 3: Cross multiply
667,331.60x = 920,918.81 × 361,407.09 - Step 4: Simplify right side
667,331.60x = 332,826,585,441.33 - Step 5: Solve for x
x = 332,826,585,441.33/667,331.60 - Step 6: Final answer
x = 498,742.44
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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.