Finding the Fourth Proportional to 640,632.60, 884,034.99 and 354,135.60
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Solution
The fourth proportional to 640,632.60, 884,034.99 and 354,135.60 is: 488,686.12
Step by Step Solution
- Step 1: Write the proportion equation
640,632.60 : 884,034.99 = 354,135.60 : x - Step 2: Convert to fraction form
640,632.60/884,034.99 = 354,135.60/x - Step 3: Cross multiply
640,632.60x = 884,034.99 × 354,135.60 - Step 4: Simplify right side
640,632.60x = 313,068,261,604.64 - Step 5: Solve for x
x = 313,068,261,604.64/640,632.60 - Step 6: Final answer
x = 488,686.12
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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.