Finding the Fourth Proportional to 485,864.93, 670,464.73 and 281,900.05
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Solution
The fourth proportional to 485,864.93, 670,464.73 and 281,900.05 is: 389,005.32
Step by Step Solution
- Step 1: Write the proportion equation
485,864.93 : 670,464.73 = 281,900.05 : x - Step 2: Convert to fraction form
485,864.93/670,464.73 = 281,900.05/x - Step 3: Cross multiply
485,864.93x = 670,464.73 × 281,900.05 - Step 4: Simplify right side
485,864.93x = 189,004,040,910.24 - Step 5: Solve for x
x = 189,004,040,910.24/485,864.93 - Step 6: Final answer
x = 389,005.32
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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.