Finding the Fourth Proportional to 491,179.68, 677,821.20 and 276,319.68
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Solution
The fourth proportional to 491,179.68, 677,821.20 and 276,319.68 is: 381,317.36
Step by Step Solution
- Step 1: Write the proportion equation
491,179.68 : 677,821.20 = 276,319.68 : x - Step 2: Convert to fraction form
491,179.68/677,821.20 = 276,319.68/x - Step 3: Cross multiply
491,179.68x = 677,821.20 × 276,319.68 - Step 4: Simplify right side
491,179.68x = 187,295,337,081.22 - Step 5: Solve for x
x = 187,295,337,081.22/491,179.68 - Step 6: Final answer
x = 381,317.36
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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.