Finding the Fourth Proportional to 431,623.80, 647,435.70 and 403,975.80
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Solution
The fourth proportional to 431,623.80, 647,435.70 and 403,975.80 is: 605,963.70
Step by Step Solution
- Step 1: Write the proportion equation
431,623.80 : 647,435.70 = 403,975.80 : x - Step 2: Convert to fraction form
431,623.80/647,435.70 = 403,975.80/x - Step 3: Cross multiply
431,623.80x = 647,435.70 × 403,975.80 - Step 4: Simplify right side
431,623.80x = 261,548,354,856.06 - Step 5: Solve for x
x = 261,548,354,856.06/431,623.80 - Step 6: Final answer
x = 605,963.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.