Home / 780,179.86-1,169,802.78-324,221.27

Finding the Fourth Proportional to 780,179.86, 1,169,802.78 and 324,221.27

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Solution

The fourth proportional to 780,179.86, 1,169,802.78 and 324,221.27 is: 486,137.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,179.86 : 1,169,802.78 = 324,221.27 : x
  2. Step 2: Convert to fraction form
    780,179.86/1,169,802.78 = 324,221.27/x
  3. Step 3: Cross multiply
    780,179.86x = 1,169,802.78 × 324,221.27
  4. Step 4: Simplify right side
    780,179.86x = 379,274,942,981.13
  5. Step 5: Solve for x
    x = 379,274,942,981.13/780,179.86
  6. Step 6: Final answer
    x = 486,137.83

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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.