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Finding the Fourth Proportional to 445,850.54, 668,814.69 and 126,005.77

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Solution

The fourth proportional to 445,850.54, 668,814.69 and 126,005.77 is: 189,019.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,850.54 : 668,814.69 = 126,005.77 : x
  2. Step 2: Convert to fraction form
    445,850.54/668,814.69 = 126,005.77/x
  3. Step 3: Cross multiply
    445,850.54x = 668,814.69 × 126,005.77
  4. Step 4: Simplify right side
    445,850.54x = 84,274,506,656.69
  5. Step 5: Solve for x
    x = 84,274,506,656.69/445,850.54
  6. Step 6: Final answer
    x = 189,019.64

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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.