Finding the Fourth Proportional to 878,137.56, 1,211,853.78 and 496,156.68
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Solution
The fourth proportional to 878,137.56, 1,211,853.78 and 496,156.68 is: 684,709.75
Step by Step Solution
- Step 1: Write the proportion equation
878,137.56 : 1,211,853.78 = 496,156.68 : x - Step 2: Convert to fraction form
878,137.56/1,211,853.78 = 496,156.68/x - Step 3: Cross multiply
878,137.56x = 1,211,853.78 × 496,156.68 - Step 4: Simplify right side
878,137.56x = 601,269,348,130.25 - Step 5: Solve for x
x = 601,269,348,130.25/878,137.56 - Step 6: Final answer
x = 684,709.75
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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.