Home / 816,900.76-1,225,351.68-255,979

Finding the Fourth Proportional to 816,900.76, 1,225,351.68 and 255,979

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Solution

The fourth proportional to 816,900.76, 1,225,351.68 and 255,979 is: 383,968.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,900.76 : 1,225,351.68 = 255,979 : x
  2. Step 2: Convert to fraction form
    816,900.76/1,225,351.68 = 255,979/x
  3. Step 3: Cross multiply
    816,900.76x = 1,225,351.68 × 255,979
  4. Step 4: Simplify right side
    816,900.76x = 313,664,297,694.72
  5. Step 5: Solve for x
    x = 313,664,297,694.72/816,900.76
  6. Step 6: Final answer
    x = 383,968.67

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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.