Home / 619,815.92-930,222.03-320,384.21

Finding the Fourth Proportional to 619,815.92, 930,222.03 and 320,384.21

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Solution

The fourth proportional to 619,815.92, 930,222.03 and 320,384.21 is: 480,833.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,815.92 : 930,222.03 = 320,384.21 : x
  2. Step 2: Convert to fraction form
    619,815.92/930,222.03 = 320,384.21/x
  3. Step 3: Cross multiply
    619,815.92x = 930,222.03 × 320,384.21
  4. Step 4: Simplify right side
    619,815.92x = 298,028,450,206.15
  5. Step 5: Solve for x
    x = 298,028,450,206.15/619,815.92
  6. Step 6: Final answer
    x = 480,833.81

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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.