Finding the Fourth Proportional to 813,771.72, 1,122,972.12 and 446,241.24
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Solution
The fourth proportional to 813,771.72, 1,122,972.12 and 446,241.24 is: 615,794.90
Step by Step Solution
- Step 1: Write the proportion equation
813,771.72 : 1,122,972.12 = 446,241.24 : x - Step 2: Convert to fraction form
813,771.72/1,122,972.12 = 446,241.24/x - Step 3: Cross multiply
813,771.72x = 1,122,972.12 × 446,241.24 - Step 4: Simplify right side
813,771.72x = 501,116,471,314.23 - Step 5: Solve for x
x = 501,116,471,314.23/813,771.72 - Step 6: Final answer
x = 615,794.90
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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.