Finding the Fourth Proportional to 831,961.62, 1,148,103.28 and 449,987.49
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Solution
The fourth proportional to 831,961.62, 1,148,103.28 and 449,987.49 is: 620,980.70
Step by Step Solution
- Step 1: Write the proportion equation
831,961.62 : 1,148,103.28 = 449,987.49 : x - Step 2: Convert to fraction form
831,961.62/1,148,103.28 = 449,987.49/x - Step 3: Cross multiply
831,961.62x = 1,148,103.28 × 449,987.49 - Step 4: Simplify right side
831,961.62x = 516,632,113,227.97 - Step 5: Solve for x
x = 516,632,113,227.97/831,961.62 - Step 6: Final answer
x = 620,980.70
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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.