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Finding the Fourth Proportional to 489,628.36, 675,735.69 and 274,769.27

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Solution

The fourth proportional to 489,628.36, 675,735.69 and 274,769.27 is: 379,208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,628.36 : 675,735.69 = 274,769.27 : x
  2. Step 2: Convert to fraction form
    489,628.36/675,735.69 = 274,769.27/x
  3. Step 3: Cross multiply
    489,628.36x = 675,735.69 × 274,769.27
  4. Step 4: Simplify right side
    489,628.36x = 185,671,402,254.25
  5. Step 5: Solve for x
    x = 185,671,402,254.25/489,628.36
  6. Step 6: Final answer
    x = 379,208.84

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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.