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Finding the Fourth Proportional to 568,394.32, 784,390.72 and 313,745.76

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Solution

The fourth proportional to 568,394.32, 784,390.72 and 313,745.76 is: 432,972.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,394.32 : 784,390.72 = 313,745.76 : x
  2. Step 2: Convert to fraction form
    568,394.32/784,390.72 = 313,745.76/x
  3. Step 3: Cross multiply
    568,394.32x = 784,390.72 × 313,745.76
  4. Step 4: Simplify right side
    568,394.32x = 246,099,262,583.35
  5. Step 5: Solve for x
    x = 246,099,262,583.35/568,394.32
  6. Step 6: Final answer
    x = 432,972.77

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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.