Finding the Fourth Proportional to 640,623.13, 883,983.16 and 354,104.26
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Solution
The fourth proportional to 640,623.13, 883,983.16 and 354,104.26 is: 488,621.45
Step by Step Solution
- Step 1: Write the proportion equation
640,623.13 : 883,983.16 = 354,104.26 : x - Step 2: Convert to fraction form
640,623.13/883,983.16 = 354,104.26/x - Step 3: Cross multiply
640,623.13x = 883,983.16 × 354,104.26 - Step 4: Simplify right side
640,623.13x = 313,022,202,724.26 - Step 5: Solve for x
x = 313,022,202,724.26/640,623.13 - Step 6: Final answer
x = 488,621.45
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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.