Finding the Fourth Proportional to 743,115.79, 1,025,563.04 and 420,883.21
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Solution
The fourth proportional to 743,115.79, 1,025,563.04 and 420,883.21 is: 580,854.65
Step by Step Solution
- Step 1: Write the proportion equation
743,115.79 : 1,025,563.04 = 420,883.21 : x - Step 2: Convert to fraction form
743,115.79/1,025,563.04 = 420,883.21/x - Step 3: Cross multiply
743,115.79x = 1,025,563.04 × 420,883.21 - Step 4: Simplify right side
743,115.79x = 431,642,264,332.56 - Step 5: Solve for x
x = 431,642,264,332.56/743,115.79 - Step 6: Final answer
x = 580,854.65
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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.