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Finding the Fourth Proportional to 555,045.26, 765,964.70 and 300,396.38

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Solution

The fourth proportional to 555,045.26, 765,964.70 and 300,396.38 is: 414,548.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,045.26 : 765,964.70 = 300,396.38 : x
  2. Step 2: Convert to fraction form
    555,045.26/765,964.70 = 300,396.38/x
  3. Step 3: Cross multiply
    555,045.26x = 765,964.70 × 300,396.38
  4. Step 4: Simplify right side
    555,045.26x = 230,093,017,755.98
  5. Step 5: Solve for x
    x = 230,093,017,755.98/555,045.26
  6. Step 6: Final answer
    x = 414,548.21

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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.