Finding the Fourth Proportional to 490,610.09, 677,019.68 and 286,679.63
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Solution
The fourth proportional to 490,610.09, 677,019.68 and 286,679.63 is: 395,604.89
Step by Step Solution
- Step 1: Write the proportion equation
490,610.09 : 677,019.68 = 286,679.63 : x - Step 2: Convert to fraction form
490,610.09/677,019.68 = 286,679.63/x - Step 3: Cross multiply
490,610.09x = 677,019.68 × 286,679.63 - Step 4: Simplify right side
490,610.09x = 194,087,751,365.12 - Step 5: Solve for x
x = 194,087,751,365.12/490,610.09 - Step 6: Final answer
x = 395,604.89
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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.