Finding the Fourth Proportional to 629,640.14, 868,878.09 and 343,154.07
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Solution
The fourth proportional to 629,640.14, 868,878.09 and 343,154.07 is: 473,538.83
Step by Step Solution
- Step 1: Write the proportion equation
629,640.14 : 868,878.09 = 343,154.07 : x - Step 2: Convert to fraction form
629,640.14/868,878.09 = 343,154.07/x - Step 3: Cross multiply
629,640.14x = 868,878.09 × 343,154.07 - Step 4: Simplify right side
629,640.14x = 298,159,052,917.33 - Step 5: Solve for x
x = 298,159,052,917.33/629,640.14 - Step 6: Final answer
x = 473,538.83
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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.