Home / 775,993.70-1,070,855.43-485,765.33

Finding the Fourth Proportional to 775,993.70, 1,070,855.43 and 485,765.33

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Solution

The fourth proportional to 775,993.70, 1,070,855.43 and 485,765.33 is: 670,346.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,993.70 : 1,070,855.43 = 485,765.33 : x
  2. Step 2: Convert to fraction form
    775,993.70/1,070,855.43 = 485,765.33/x
  3. Step 3: Cross multiply
    775,993.70x = 1,070,855.43 × 485,765.33
  4. Step 4: Simplify right side
    775,993.70x = 520,184,441,336.24
  5. Step 5: Solve for x
    x = 520,184,441,336.24/775,993.70
  6. Step 6: Final answer
    x = 670,346.22

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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.