Home / 1,120,454.64-1,545,786.78-689,987.44

Finding the Fourth Proportional to 1,120,454.64, 1,545,786.78 and 689,987.44

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Solution

The fourth proportional to 1,120,454.64, 1,545,786.78 and 689,987.44 is: 951,911.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,454.64 : 1,545,786.78 = 689,987.44 : x
  2. Step 2: Convert to fraction form
    1,120,454.64/1,545,786.78 = 689,987.44/x
  3. Step 3: Cross multiply
    1,120,454.64x = 1,545,786.78 × 689,987.44
  4. Step 4: Simplify right side
    1,120,454.64x = 1,066,573,463,118.04
  5. Step 5: Solve for x
    x = 1,066,573,463,118.04/1,120,454.64
  6. Step 6: Final answer
    x = 951,911.33

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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.