Home / 780,178.86-1,169,801.28-324,220.27

Finding the Fourth Proportional to 780,178.86, 1,169,801.28 and 324,220.27

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Solution

The fourth proportional to 780,178.86, 1,169,801.28 and 324,220.27 is: 486,136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,178.86 : 1,169,801.28 = 324,220.27 : x
  2. Step 2: Convert to fraction form
    780,178.86/1,169,801.28 = 324,220.27/x
  3. Step 3: Cross multiply
    780,178.86x = 1,169,801.28 × 324,220.27
  4. Step 4: Simplify right side
    780,178.86x = 379,273,286,847.95
  5. Step 5: Solve for x
    x = 379,273,286,847.95/780,178.86
  6. Step 6: Final answer
    x = 486,136.33

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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.