Finding the Fourth Proportional to 431,741.70, 647,029.35 and 289,181.70
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Solution
The fourth proportional to 431,741.70, 647,029.35 and 289,181.70 is: 433,381.92
Step by Step Solution
- Step 1: Write the proportion equation
431,741.70 : 647,029.35 = 289,181.70 : x - Step 2: Convert to fraction form
431,741.70/647,029.35 = 289,181.70/x - Step 3: Cross multiply
431,741.70x = 647,029.35 × 289,181.70 - Step 4: Simplify right side
431,741.70x = 187,109,047,382.90 - Step 5: Solve for x
x = 187,109,047,382.90/431,741.70 - Step 6: Final answer
x = 433,381.92
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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.