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Finding the Fourth Proportional to 555,067.72, 765,995.72 and 300,418.84

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Solution

The fourth proportional to 555,067.72, 765,995.72 and 300,418.84 is: 414,579.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,067.72 : 765,995.72 = 300,418.84 : x
  2. Step 2: Convert to fraction form
    555,067.72/765,995.72 = 300,418.84/x
  3. Step 3: Cross multiply
    555,067.72x = 765,995.72 × 300,418.84
  4. Step 4: Simplify right side
    555,067.72x = 230,119,545,647.37
  5. Step 5: Solve for x
    x = 230,119,545,647.37/555,067.72
  6. Step 6: Final answer
    x = 414,579.23

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1.5x scale

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.