Home / 405,953.11-609,006.21-125,404.75

Finding the Fourth Proportional to 405,953.11, 609,006.21 and 125,404.75

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Solution

The fourth proportional to 405,953.11, 609,006.21 and 125,404.75 is: 188,130.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,953.11 : 609,006.21 = 125,404.75 : x
  2. Step 2: Convert to fraction form
    405,953.11/609,006.21 = 125,404.75/x
  3. Step 3: Cross multiply
    405,953.11x = 609,006.21 × 125,404.75
  4. Step 4: Simplify right side
    405,953.11x = 76,372,271,513.50
  5. Step 5: Solve for x
    x = 76,372,271,513.50/405,953.11
  6. Step 6: Final answer
    x = 188,130.77

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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.