Home / 1,289,105.28-1,778,343.30-858,834.90

Finding the Fourth Proportional to 1,289,105.28, 1,778,343.30 and 858,834.90

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Solution

The fourth proportional to 1,289,105.28, 1,778,343.30 and 858,834.90 is: 1,184,777.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,105.28 : 1,778,343.30 = 858,834.90 : x
  2. Step 2: Convert to fraction form
    1,289,105.28/1,778,343.30 = 858,834.90/x
  3. Step 3: Cross multiply
    1,289,105.28x = 1,778,343.30 × 858,834.90
  4. Step 4: Simplify right side
    1,289,105.28x = 1,527,303,290,221.17
  5. Step 5: Solve for x
    x = 1,527,303,290,221.17/1,289,105.28
  6. Step 6: Final answer
    x = 1,184,777.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.