Finding the Fourth Proportional to 424,138.40, 636,207.60 and 403,402.40
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Solution
The fourth proportional to 424,138.40, 636,207.60 and 403,402.40 is: 605,103.60
Step by Step Solution
- Step 1: Write the proportion equation
424,138.40 : 636,207.60 = 403,402.40 : x - Step 2: Convert to fraction form
424,138.40/636,207.60 = 403,402.40/x - Step 3: Cross multiply
424,138.40x = 636,207.60 × 403,402.40 - Step 4: Simplify right side
424,138.40x = 256,647,672,738.24 - Step 5: Solve for x
x = 256,647,672,738.24/424,138.40 - Step 6: Final answer
x = 605,103.60
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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.