Finding the Fourth Proportional to 640,181.75, 883,486.24 and 353,695.68
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Solution
The fourth proportional to 640,181.75, 883,486.24 and 353,695.68 is: 488,119.61
Step by Step Solution
- Step 1: Write the proportion equation
640,181.75 : 883,486.24 = 353,695.68 : x - Step 2: Convert to fraction form
640,181.75/883,486.24 = 353,695.68/x - Step 3: Cross multiply
640,181.75x = 883,486.24 × 353,695.68 - Step 4: Simplify right side
640,181.75x = 312,485,265,543.20 - Step 5: Solve for x
x = 312,485,265,543.20/640,181.75 - Step 6: Final answer
x = 488,119.61
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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.