Finding the Fourth Proportional to 691,717.22, 954,930.57 and 490,992.74
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Solution
The fourth proportional to 691,717.22, 954,930.57 and 490,992.74 is: 677,826.09
Step by Step Solution
- Step 1: Write the proportion equation
691,717.22 : 954,930.57 = 490,992.74 : x - Step 2: Convert to fraction form
691,717.22/954,930.57 = 490,992.74/x - Step 3: Cross multiply
691,717.22x = 954,930.57 × 490,992.74 - Step 4: Simplify right side
691,717.22x = 468,863,977,074.06 - Step 5: Solve for x
x = 468,863,977,074.06/691,717.22 - Step 6: Final answer
x = 677,826.09
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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.