Finding the Fourth Proportional to 731,138.44, 1,006,728.06 and 639,984.28
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Solution
The fourth proportional to 731,138.44, 1,006,728.06 and 639,984.28 is: 881,214.96
Step by Step Solution
- Step 1: Write the proportion equation
731,138.44 : 1,006,728.06 = 639,984.28 : x - Step 2: Convert to fraction form
731,138.44/1,006,728.06 = 639,984.28/x - Step 3: Cross multiply
731,138.44x = 1,006,728.06 × 639,984.28 - Step 4: Simplify right side
731,138.44x = 644,290,132,634.90 - Step 5: Solve for x
x = 644,290,132,634.90/731,138.44 - Step 6: Final answer
x = 881,214.96
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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.