Home / 743,072.56-1,025,865.30-489,161.92

Finding the Fourth Proportional to 743,072.56, 1,025,865.30 and 489,161.92

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Solution

The fourth proportional to 743,072.56, 1,025,865.30 and 489,161.92 is: 675,323.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,072.56 : 1,025,865.30 = 489,161.92 : x
  2. Step 2: Convert to fraction form
    743,072.56/1,025,865.30 = 489,161.92/x
  3. Step 3: Cross multiply
    743,072.56x = 1,025,865.30 × 489,161.92
  4. Step 4: Simplify right side
    743,072.56x = 501,814,239,809.38
  5. Step 5: Solve for x
    x = 501,814,239,809.38/743,072.56
  6. Step 6: Final answer
    x = 675,323.34

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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.