Finding the Fourth Proportional to 641,720.64, 885,587.04 and 355,232.64
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Solution
The fourth proportional to 641,720.64, 885,587.04 and 355,232.64 is: 490,227.99
Step by Step Solution
- Step 1: Write the proportion equation
641,720.64 : 885,587.04 = 355,232.64 : x - Step 2: Convert to fraction form
641,720.64/885,587.04 = 355,232.64/x - Step 3: Cross multiply
641,720.64x = 885,587.04 × 355,232.64 - Step 4: Simplify right side
641,720.64x = 314,589,422,168.99 - Step 5: Solve for x
x = 314,589,422,168.99/641,720.64 - Step 6: Final answer
x = 490,227.99
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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.