Finding the Fourth Proportional to 511,372.48, 705,694.80 and 285,013.12
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Solution
The fourth proportional to 511,372.48, 705,694.80 and 285,013.12 is: 393,318.54
Step by Step Solution
- Step 1: Write the proportion equation
511,372.48 : 705,694.80 = 285,013.12 : x - Step 2: Convert to fraction form
511,372.48/705,694.80 = 285,013.12/x - Step 3: Cross multiply
511,372.48x = 705,694.80 × 285,013.12 - Step 4: Simplify right side
511,372.48x = 201,132,276,715.78 - Step 5: Solve for x
x = 201,132,276,715.78/511,372.48 - Step 6: Final answer
x = 393,318.54
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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.