Home / 1,109,668.78-1,529,948.73-905,512.33

Finding the Fourth Proportional to 1,109,668.78, 1,529,948.73 and 905,512.33

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Solution

The fourth proportional to 1,109,668.78, 1,529,948.73 and 905,512.33 is: 1,248,469.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,668.78 : 1,529,948.73 = 905,512.33 : x
  2. Step 2: Convert to fraction form
    1,109,668.78/1,529,948.73 = 905,512.33/x
  3. Step 3: Cross multiply
    1,109,668.78x = 1,529,948.73 × 905,512.33
  4. Step 4: Simplify right side
    1,109,668.78x = 1,385,387,439,282.84
  5. Step 5: Solve for x
    x = 1,385,387,439,282.84/1,109,668.78
  6. Step 6: Final answer
    x = 1,248,469.33

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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.