Home / 814,928.70-1,221,408.90-415,363.80

Finding the Fourth Proportional to 814,928.70, 1,221,408.90 and 415,363.80

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Solution

The fourth proportional to 814,928.70, 1,221,408.90 and 415,363.80 is: 622,544.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,928.70 : 1,221,408.90 = 415,363.80 : x
  2. Step 2: Convert to fraction form
    814,928.70/1,221,408.90 = 415,363.80/x
  3. Step 3: Cross multiply
    814,928.70x = 1,221,408.90 × 415,363.80
  4. Step 4: Simplify right side
    814,928.70x = 507,329,042,057.82
  5. Step 5: Solve for x
    x = 507,329,042,057.82/814,928.70
  6. Step 6: Final answer
    x = 622,544.09

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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.