Home / 414,516.51-621,788.09-115,000.11

Finding the Fourth Proportional to 414,516.51, 621,788.09 and 115,000.11

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Solution

The fourth proportional to 414,516.51, 621,788.09 and 115,000.11 is: 172,503.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,516.51 : 621,788.09 = 115,000.11 : x
  2. Step 2: Convert to fraction form
    414,516.51/621,788.09 = 115,000.11/x
  3. Step 3: Cross multiply
    414,516.51x = 621,788.09 × 115,000.11
  4. Step 4: Simplify right side
    414,516.51x = 71,505,698,171.69
  5. Step 5: Solve for x
    x = 71,505,698,171.69/414,516.51
  6. Step 6: Final answer
    x = 172,503.86

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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.