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Finding the Fourth Proportional to 451,483.12, 622,920.60 and 355,692.48

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Solution

The fourth proportional to 451,483.12, 622,920.60 and 355,692.48 is: 490,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,483.12 : 622,920.60 = 355,692.48 : x
  2. Step 2: Convert to fraction form
    451,483.12/622,920.60 = 355,692.48/x
  3. Step 3: Cross multiply
    451,483.12x = 622,920.60 × 355,692.48
  4. Step 4: Simplify right side
    451,483.12x = 221,568,173,057.09
  5. Step 5: Solve for x
    x = 221,568,173,057.09/451,483.12
  6. Step 6: Final answer
    x = 490,756.27

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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.