Finding the Fourth Proportional to 821,863.84, 1,134,168.80 and 459,287.68
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Solution
The fourth proportional to 821,863.84, 1,134,168.80 and 459,287.68 is: 633,815.15
Step by Step Solution
- Step 1: Write the proportion equation
821,863.84 : 1,134,168.80 = 459,287.68 : x - Step 2: Convert to fraction form
821,863.84/1,134,168.80 = 459,287.68/x - Step 3: Cross multiply
821,863.84x = 1,134,168.80 × 459,287.68 - Step 4: Simplify right side
821,863.84x = 520,909,756,880.38 - Step 5: Solve for x
x = 520,909,756,880.38/821,863.84 - Step 6: Final answer
x = 633,815.15
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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.