Home / 766,815.41-1,058,251.50-422,650.86

Finding the Fourth Proportional to 766,815.41, 1,058,251.50 and 422,650.86

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Solution

The fourth proportional to 766,815.41, 1,058,251.50 and 422,650.86 is: 583,283.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,815.41 : 1,058,251.50 = 422,650.86 : x
  2. Step 2: Convert to fraction form
    766,815.41/1,058,251.50 = 422,650.86/x
  3. Step 3: Cross multiply
    766,815.41x = 1,058,251.50 × 422,650.86
  4. Step 4: Simplify right side
    766,815.41x = 447,270,906,571.29
  5. Step 5: Solve for x
    x = 447,270,906,571.29/766,815.41
  6. Step 6: Final answer
    x = 583,283.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.