Home / 436,448.72-654,673.16-120,905.80

Finding the Fourth Proportional to 436,448.72, 654,673.16 and 120,905.80

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Solution

The fourth proportional to 436,448.72, 654,673.16 and 120,905.80 is: 181,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,448.72 : 654,673.16 = 120,905.80 : x
  2. Step 2: Convert to fraction form
    436,448.72/654,673.16 = 120,905.80/x
  3. Step 3: Cross multiply
    436,448.72x = 654,673.16 × 120,905.80
  4. Step 4: Simplify right side
    436,448.72x = 79,153,782,148.33
  5. Step 5: Solve for x
    x = 79,153,782,148.33/436,448.72
  6. Step 6: Final answer
    x = 181,358.72

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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.