Home / 489,982.43-734,687.55-190,112.78

Finding the Fourth Proportional to 489,982.43, 734,687.55 and 190,112.78

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Solution

The fourth proportional to 489,982.43, 734,687.55 and 190,112.78 is: 285,058.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,982.43 : 734,687.55 = 190,112.78 : x
  2. Step 2: Convert to fraction form
    489,982.43/734,687.55 = 190,112.78/x
  3. Step 3: Cross multiply
    489,982.43x = 734,687.55 × 190,112.78
  4. Step 4: Simplify right side
    489,982.43x = 139,673,492,561.89
  5. Step 5: Solve for x
    x = 139,673,492,561.89/489,982.43
  6. Step 6: Final answer
    x = 285,058.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.