Finding the Fourth Proportional to 831,432.72, 1,147,376.70 and 449,460.21
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Solution
The fourth proportional to 831,432.72, 1,147,376.70 and 449,460.21 is: 620,254.84
Step by Step Solution
- Step 1: Write the proportion equation
831,432.72 : 1,147,376.70 = 449,460.21 : x - Step 2: Convert to fraction form
831,432.72/1,147,376.70 = 449,460.21/x - Step 3: Cross multiply
831,432.72x = 1,147,376.70 × 449,460.21 - Step 4: Simplify right side
831,432.72x = 515,700,172,531.11 - Step 5: Solve for x
x = 515,700,172,531.11/831,432.72 - Step 6: Final answer
x = 620,254.84
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1.5x scale
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.