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Finding the Fourth Proportional to 568,128.44, 784,019.58 and 313,487.12

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Solution

The fourth proportional to 568,128.44, 784,019.58 and 313,487.12 is: 432,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,128.44 : 784,019.58 = 313,487.12 : x
  2. Step 2: Convert to fraction form
    568,128.44/784,019.58 = 313,487.12/x
  3. Step 3: Cross multiply
    568,128.44x = 784,019.58 × 313,487.12
  4. Step 4: Simplify right side
    568,128.44x = 245,780,040,157.81
  5. Step 5: Solve for x
    x = 245,780,040,157.81/568,128.44
  6. Step 6: Final answer
    x = 432,613.51

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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.