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Finding the Fourth Proportional to 620,358.97, 930,029.98 and 220,772.20

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Solution

The fourth proportional to 620,358.97, 930,029.98 and 220,772.20 is: 330,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,358.97 : 930,029.98 = 220,772.20 : x
  2. Step 2: Convert to fraction form
    620,358.97/930,029.98 = 220,772.20/x
  3. Step 3: Cross multiply
    620,358.97x = 930,029.98 × 220,772.20
  4. Step 4: Simplify right side
    620,358.97x = 205,324,764,198.63
  5. Step 5: Solve for x
    x = 205,324,764,198.63/620,358.97
  6. Step 6: Final answer
    x = 330,977.34

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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.