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Finding the Fourth Proportional to 568,819.91, 784,966.81 and 310,697.02

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Solution

The fourth proportional to 568,819.91, 784,966.81 and 310,697.02 is: 428,759.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,819.91 : 784,966.81 = 310,697.02 : x
  2. Step 2: Convert to fraction form
    568,819.91/784,966.81 = 310,697.02/x
  3. Step 3: Cross multiply
    568,819.91x = 784,966.81 × 310,697.02
  4. Step 4: Simplify right side
    568,819.91x = 243,886,848,665.91
  5. Step 5: Solve for x
    x = 243,886,848,665.91/568,819.91
  6. Step 6: Final answer
    x = 428,759.34

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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.