Finding the Fourth Proportional to 878,754.21, 1,212,721.25 and 496,797.09
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Solution
The fourth proportional to 878,754.21, 1,212,721.25 and 496,797.09 is: 685,602.84
Step by Step Solution
- Step 1: Write the proportion equation
878,754.21 : 1,212,721.25 = 496,797.09 : x - Step 2: Convert to fraction form
878,754.21/1,212,721.25 = 496,797.09/x - Step 3: Cross multiply
878,754.21x = 1,212,721.25 × 496,797.09 - Step 4: Simplify right side
878,754.21x = 602,476,385,497.18 - Step 5: Solve for x
x = 602,476,385,497.18/878,754.21 - Step 6: Final answer
x = 685,602.84
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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.