Finding the Fourth Proportional to 640,654.60, 884,121.78 and 354,193.12
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Solution
The fourth proportional to 640,654.60, 884,121.78 and 354,193.12 is: 488,796.70
Step by Step Solution
- Step 1: Write the proportion equation
640,654.60 : 884,121.78 = 354,193.12 : x - Step 2: Convert to fraction form
640,654.60/884,121.78 = 354,193.12/x - Step 3: Cross multiply
640,654.60x = 884,121.78 × 354,193.12 - Step 4: Simplify right side
640,654.60x = 313,149,851,718.15 - Step 5: Solve for x
x = 313,149,851,718.15/640,654.60 - Step 6: Final answer
x = 488,796.70
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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.