Home / 280,983,794,319.38-421,425,869,786.20-127,792,802,313.88

Finding the Fourth Proportional to 280,983,794,319.38, 421,425,869,786.20 and 127,792,802,313.88

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Solution

The fourth proportional to 280,983,794,319.38, 421,425,869,786.20 and 127,792,802,313.88 is: 191,666,544,321.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,983,794,319.38 : 421,425,869,786.20 = 127,792,802,313.88 : x
  2. Step 2: Convert to fraction form
    280,983,794,319.38/421,425,869,786.20 = 127,792,802,313.88/x
  3. Step 3: Cross multiply
    280,983,794,319.38x = 421,425,869,786.20 × 127,792,802,313.88
  4. Step 4: Simplify right side
    280,983,794,319.38x = 53,855,192,867,542,793,191,424
  5. Step 5: Solve for x
    x = 53,855,192,867,542,793,191,424/280,983,794,319.38
  6. Step 6: Final answer
    x = 191,666,544,321.52

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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.