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Finding the Fourth Proportional to 568,016.64, 783,865.62 and 313,367.76

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Solution

The fourth proportional to 568,016.64, 783,865.62 and 313,367.76 is: 432,448.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,016.64 : 783,865.62 = 313,367.76 : x
  2. Step 2: Convert to fraction form
    568,016.64/783,865.62 = 313,367.76/x
  3. Step 3: Cross multiply
    568,016.64x = 783,865.62 × 313,367.76
  4. Step 4: Simplify right side
    568,016.64x = 245,638,213,480.41
  5. Step 5: Solve for x
    x = 245,638,213,480.41/568,016.64
  6. Step 6: Final answer
    x = 432,448.97

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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.