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Finding the Fourth Proportional to 489,868.56, 734,966.46 and 190,358.91

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Solution

The fourth proportional to 489,868.56, 734,966.46 and 190,358.91 is: 285,601.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,868.56 : 734,966.46 = 190,358.91 : x
  2. Step 2: Convert to fraction form
    489,868.56/734,966.46 = 190,358.91/x
  3. Step 3: Cross multiply
    489,868.56x = 734,966.46 × 190,358.91
  4. Step 4: Simplify right side
    489,868.56x = 139,907,414,212.16
  5. Step 5: Solve for x
    x = 139,907,414,212.16/489,868.56
  6. Step 6: Final answer
    x = 285,601.95

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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.