Finding the Fourth Proportional to 640,704.96, 884,167.92 and 354,237.12
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Solution
The fourth proportional to 640,704.96, 884,167.92 and 354,237.12 is: 488,844.50
Step by Step Solution
- Step 1: Write the proportion equation
640,704.96 : 884,167.92 = 354,237.12 : x - Step 2: Convert to fraction form
640,704.96/884,167.92 = 354,237.12/x - Step 3: Cross multiply
640,704.96x = 884,167.92 × 354,237.12 - Step 4: Simplify right side
640,704.96x = 313,205,097,577.19 - Step 5: Solve for x
x = 313,205,097,577.19/640,704.96 - Step 6: Final answer
x = 488,844.50
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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.