Home / 442,679,478.36-664,162,886.12-131,789,783.43

Finding the Fourth Proportional to 442,679,478.36, 664,162,886.12 and 131,789,783.43

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Solution

The fourth proportional to 442,679,478.36, 664,162,886.12 and 131,789,783.43 is: 197,727,446.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,679,478.36 : 664,162,886.12 = 131,789,783.43 : x
  2. Step 2: Convert to fraction form
    442,679,478.36/664,162,886.12 = 131,789,783.43/x
  3. Step 3: Cross multiply
    442,679,478.36x = 664,162,886.12 × 131,789,783.43
  4. Step 4: Simplify right side
    442,679,478.36x = 87,529,882,921,837,408
  5. Step 5: Solve for x
    x = 87,529,882,921,837,408/442,679,478.36
  6. Step 6: Final answer
    x = 197,727,446.61

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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.