Home / 619,123.88-928,778.08-219,731.21

Finding the Fourth Proportional to 619,123.88, 928,778.08 and 219,731.21

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Solution

The fourth proportional to 619,123.88, 928,778.08 and 219,731.21 is: 329,629.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,123.88 : 928,778.08 = 219,731.21 : x
  2. Step 2: Convert to fraction form
    619,123.88/928,778.08 = 219,731.21/x
  3. Step 3: Cross multiply
    619,123.88x = 928,778.08 × 219,731.21
  4. Step 4: Simplify right side
    619,123.88x = 204,081,528,356.38
  5. Step 5: Solve for x
    x = 204,081,528,356.38/619,123.88
  6. Step 6: Final answer
    x = 329,629.55

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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.