Finding the Fourth Proportional to 642,752.10, 963,739.35 and 287,699.94
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Solution
The fourth proportional to 642,752.10, 963,739.35 and 287,699.94 is: 431,375.88
Step by Step Solution
- Step 1: Write the proportion equation
642,752.10 : 963,739.35 = 287,699.94 : x - Step 2: Convert to fraction form
642,752.10/963,739.35 = 287,699.94/x - Step 3: Cross multiply
642,752.10x = 963,739.35 × 287,699.94 - Step 4: Simplify right side
642,752.10x = 277,267,753,170.64 - Step 5: Solve for x
x = 277,267,753,170.64/642,752.10 - Step 6: Final answer
x = 431,375.88
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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.