Finding the Fourth Proportional to 812,182.84, 1,120,821.18 and 449,612.75
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Solution
The fourth proportional to 812,182.84, 1,120,821.18 and 449,612.75 is: 620,470.50
Step by Step Solution
- Step 1: Write the proportion equation
812,182.84 : 1,120,821.18 = 449,612.75 : x - Step 2: Convert to fraction form
812,182.84/1,120,821.18 = 449,612.75/x - Step 3: Cross multiply
812,182.84x = 1,120,821.18 × 449,612.75 - Step 4: Simplify right side
812,182.84x = 503,935,492,998.05 - Step 5: Solve for x
x = 503,935,492,998.05/812,182.84 - Step 6: Final answer
x = 620,470.50
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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.