Finding the Fourth Proportional to 782,137.28, 1,079,349.42 and 424,441.28
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Solution
The fourth proportional to 782,137.28, 1,079,349.42 and 424,441.28 is: 585,728.95
Step by Step Solution
- Step 1: Write the proportion equation
782,137.28 : 1,079,349.42 = 424,441.28 : x - Step 2: Convert to fraction form
782,137.28/1,079,349.42 = 424,441.28/x - Step 3: Cross multiply
782,137.28x = 1,079,349.42 × 424,441.28 - Step 4: Simplify right side
782,137.28x = 458,120,449,392.06 - Step 5: Solve for x
x = 458,120,449,392.06/782,137.28 - Step 6: Final answer
x = 585,728.95
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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.