Finding the Fourth Proportional to 786,682.09, 1,085,228.25 and 496,653.08
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Solution
The fourth proportional to 786,682.09, 1,085,228.25 and 496,653.08 is: 685,133.12
Step by Step Solution
- Step 1: Write the proportion equation
786,682.09 : 1,085,228.25 = 496,653.08 : x - Step 2: Convert to fraction form
786,682.09/1,085,228.25 = 496,653.08/x - Step 3: Cross multiply
786,682.09x = 1,085,228.25 × 496,653.08 - Step 4: Simplify right side
786,682.09x = 538,981,952,865.51 - Step 5: Solve for x
x = 538,981,952,865.51/786,682.09 - Step 6: Final answer
x = 685,133.12
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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.