Home / 1,256,138.76-1,733,421.69-683,178.78

Finding the Fourth Proportional to 1,256,138.76, 1,733,421.69 and 683,178.78

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Solution

The fourth proportional to 1,256,138.76, 1,733,421.69 and 683,178.78 is: 942,759.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,138.76 : 1,733,421.69 = 683,178.78 : x
  2. Step 2: Convert to fraction form
    1,256,138.76/1,733,421.69 = 683,178.78/x
  3. Step 3: Cross multiply
    1,256,138.76x = 1,733,421.69 × 683,178.78
  4. Step 4: Simplify right side
    1,256,138.76x = 1,184,236,915,399.74
  5. Step 5: Solve for x
    x = 1,184,236,915,399.74/1,256,138.76
  6. Step 6: Final answer
    x = 942,759.63

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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.