Finding the Fourth Proportional to 640,449.24, 883,941.84 and 422,274.12
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Solution
The fourth proportional to 640,449.24, 883,941.84 and 422,274.12 is: 582,818.65
Step by Step Solution
- Step 1: Write the proportion equation
640,449.24 : 883,941.84 = 422,274.12 : x - Step 2: Convert to fraction form
640,449.24/883,941.84 = 422,274.12/x - Step 3: Cross multiply
640,449.24x = 883,941.84 × 422,274.12 - Step 4: Simplify right side
640,449.24x = 373,265,762,617.18 - Step 5: Solve for x
x = 373,265,762,617.18/640,449.24 - Step 6: Final answer
x = 582,818.65
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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.