Finding the Fourth Proportional to 827,313.27, 1,240,390.99 and 422,630.79
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Solution
The fourth proportional to 827,313.27, 1,240,390.99 and 422,630.79 is: 633,650.45
Step by Step Solution
- Step 1: Write the proportion equation
827,313.27 : 1,240,390.99 = 422,630.79 : x - Step 2: Convert to fraction form
827,313.27/1,240,390.99 = 422,630.79/x - Step 3: Cross multiply
827,313.27x = 1,240,390.99 × 422,630.79 - Step 4: Simplify right side
827,313.27x = 524,227,424,012.58 - Step 5: Solve for x
x = 524,227,424,012.58/827,313.27 - Step 6: Final answer
x = 633,650.45
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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.