Finding the Fourth Proportional to 422,417.42, 633,626.11 and 280,539.81
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Solution
The fourth proportional to 422,417.42, 633,626.11 and 280,539.81 is: 420,809.70
Step by Step Solution
- Step 1: Write the proportion equation
422,417.42 : 633,626.11 = 280,539.81 : x - Step 2: Convert to fraction form
422,417.42/633,626.11 = 280,539.81/x - Step 3: Cross multiply
422,417.42x = 633,626.11 × 280,539.81 - Step 4: Simplify right side
422,417.42x = 177,757,348,861.11 - Step 5: Solve for x
x = 177,757,348,861.11/422,417.42 - Step 6: Final answer
x = 420,809.70
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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.