Finding the Fourth Proportional to 640,724.31, 884,121.62 and 354,204.63
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Solution
The fourth proportional to 640,724.31, 884,121.62 and 354,204.63 is: 488,759.31
Step by Step Solution
- Step 1: Write the proportion equation
640,724.31 : 884,121.62 = 354,204.63 : x - Step 2: Convert to fraction form
640,724.31/884,121.62 = 354,204.63/x - Step 3: Cross multiply
640,724.31x = 884,121.62 × 354,204.63 - Step 4: Simplify right side
640,724.31x = 313,159,969,516.08 - Step 5: Solve for x
x = 313,159,969,516.08/640,724.31 - Step 6: Final answer
x = 488,759.31
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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.