Finding the Fourth Proportional to 769,638.25, 1,062,080.99 and 430,109.29
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Solution
The fourth proportional to 769,638.25, 1,062,080.99 and 430,109.29 is: 593,539.76
Step by Step Solution
- Step 1: Write the proportion equation
769,638.25 : 1,062,080.99 = 430,109.29 : x - Step 2: Convert to fraction form
769,638.25/1,062,080.99 = 430,109.29/x - Step 3: Cross multiply
769,638.25x = 1,062,080.99 × 430,109.29 - Step 4: Simplify right side
769,638.25x = 456,810,898,380.85 - Step 5: Solve for x
x = 456,810,898,380.85/769,638.25 - Step 6: Final answer
x = 593,539.76
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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.