Finding the Fourth Proportional to 813,982.20, 1,122,000.84 and 641,620.68
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Solution
The fourth proportional to 813,982.20, 1,122,000.84 and 641,620.68 is: 884,416.07
Step by Step Solution
- Step 1: Write the proportion equation
813,982.20 : 1,122,000.84 = 641,620.68 : x - Step 2: Convert to fraction form
813,982.20/1,122,000.84 = 641,620.68/x - Step 3: Cross multiply
813,982.20x = 1,122,000.84 × 641,620.68 - Step 4: Simplify right side
813,982.20x = 719,898,941,921.37 - Step 5: Solve for x
x = 719,898,941,921.37/813,982.20 - Step 6: Final answer
x = 884,416.07
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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.