Home / 436,315.21-654,487.13-120,745.69

Finding the Fourth Proportional to 436,315.21, 654,487.13 and 120,745.69

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Solution

The fourth proportional to 436,315.21, 654,487.13 and 120,745.69 is: 181,122.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,315.21 : 654,487.13 = 120,745.69 : x
  2. Step 2: Convert to fraction form
    436,315.21/654,487.13 = 120,745.69/x
  3. Step 3: Cross multiply
    436,315.21x = 654,487.13 × 120,745.69
  4. Step 4: Simplify right side
    436,315.21x = 79,026,500,107.97
  5. Step 5: Solve for x
    x = 79,026,500,107.97/436,315.21
  6. Step 6: Final answer
    x = 181,122.50

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1.5x scale

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.