Home / 619,617.28-929,338.08-198,838.72

Finding the Fourth Proportional to 619,617.28, 929,338.08 and 198,838.72

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Solution

The fourth proportional to 619,617.28, 929,338.08 and 198,838.72 is: 298,229.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,617.28 : 929,338.08 = 198,838.72 : x
  2. Step 2: Convert to fraction form
    619,617.28/929,338.08 = 198,838.72/x
  3. Step 3: Cross multiply
    619,617.28x = 929,338.08 × 198,838.72
  4. Step 4: Simplify right side
    619,617.28x = 184,788,394,274.46
  5. Step 5: Solve for x
    x = 184,788,394,274.46/619,617.28
  6. Step 6: Final answer
    x = 298,229.89

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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.