Home / 18,443,613,845.81-27,667,109,105.38-5,178,782,740.22

Finding the Fourth Proportional to 18,443,613,845.81, 27,667,109,105.38 and 5,178,782,740.22

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Solution

The fourth proportional to 18,443,613,845.81, 27,667,109,105.38 and 5,178,782,740.22 is: 7,768,648,178.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443,613,845.81 : 27,667,109,105.38 = 5,178,782,740.22 : x
  2. Step 2: Convert to fraction form
    18,443,613,845.81/27,667,109,105.38 = 5,178,782,740.22/x
  3. Step 3: Cross multiply
    18,443,613,845.81x = 27,667,109,105.38 × 5,178,782,740.22
  4. Step 4: Simplify right side
    18,443,613,845.81x = 143,281,947,106,768,814,080
  5. Step 5: Solve for x
    x = 143,281,947,106,768,814,080/18,443,613,845.81
  6. Step 6: Final answer
    x = 7,768,648,178.42

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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.