Home / 489,889-734,879.94-190,392.67

Finding the Fourth Proportional to 489,889, 734,879.94 and 190,392.67

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Solution

The fourth proportional to 489,889, 734,879.94 and 190,392.67 is: 285,607.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,889 : 734,879.94 = 190,392.67 : x
  2. Step 2: Convert to fraction form
    489,889/734,879.94 = 190,392.67/x
  3. Step 3: Cross multiply
    489,889x = 734,879.94 × 190,392.67
  4. Step 4: Simplify right side
    489,889x = 139,915,753,906.04
  5. Step 5: Solve for x
    x = 139,915,753,906.04/489,889
  6. Step 6: Final answer
    x = 285,607.05

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1.5x scale

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.