Finding the Fourth Proportional to 513,654.21, 709,520.11 and 394,270.74
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Solution
The fourth proportional to 513,654.21, 709,520.11 and 394,270.74 is: 544,613.50
Step by Step Solution
- Step 1: Write the proportion equation
513,654.21 : 709,520.11 = 394,270.74 : x - Step 2: Convert to fraction form
513,654.21/709,520.11 = 394,270.74/x - Step 3: Cross multiply
513,654.21x = 709,520.11 × 394,270.74 - Step 4: Simplify right side
513,654.21x = 279,743,017,828.91 - Step 5: Solve for x
x = 279,743,017,828.91/513,654.21 - Step 6: Final answer
x = 544,613.50
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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.