Home / 422,505,372.69-633,310,762.86-142,119,364.64

Finding the Fourth Proportional to 422,505,372.69, 633,310,762.86 and 142,119,364.64

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Solution

The fourth proportional to 422,505,372.69, 633,310,762.86 and 142,119,364.64 is: 213,028,588.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,505,372.69 : 633,310,762.86 = 142,119,364.64 : x
  2. Step 2: Convert to fraction form
    422,505,372.69/633,310,762.86 = 142,119,364.64/x
  3. Step 3: Cross multiply
    422,505,372.69x = 633,310,762.86 × 142,119,364.64
  4. Step 4: Simplify right side
    422,505,372.69x = 90,005,723,234,170,352
  5. Step 5: Solve for x
    x = 90,005,723,234,170,352/422,505,372.69
  6. Step 6: Final answer
    x = 213,028,588.63

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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.