Home / 381,726.40-571,423.20-297,745.60

Finding the Fourth Proportional to 381,726.40, 571,423.20 and 297,745.60

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Solution

The fourth proportional to 381,726.40, 571,423.20 and 297,745.60 is: 445,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,726.40 : 571,423.20 = 297,745.60 : x
  2. Step 2: Convert to fraction form
    381,726.40/571,423.20 = 297,745.60/x
  3. Step 3: Cross multiply
    381,726.40x = 571,423.20 × 297,745.60
  4. Step 4: Simplify right side
    381,726.40x = 170,138,743,537.92
  5. Step 5: Solve for x
    x = 170,138,743,537.92/381,726.40
  6. Step 6: Final answer
    x = 445,708.61

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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.