Finding the Fourth Proportional to 813,309.21, 1,122,366.71 and 450,787.56
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Solution
The fourth proportional to 813,309.21, 1,122,366.71 and 450,787.56 is: 622,086.83
Step by Step Solution
- Step 1: Write the proportion equation
813,309.21 : 1,122,366.71 = 450,787.56 : x - Step 2: Convert to fraction form
813,309.21/1,122,366.71 = 450,787.56/x - Step 3: Cross multiply
813,309.21x = 1,122,366.71 × 450,787.56 - Step 4: Simplify right side
813,309.21x = 505,948,948,372.19 - Step 5: Solve for x
x = 505,948,948,372.19/813,309.21 - Step 6: Final answer
x = 622,086.83
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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.