Home / 826,939.94-1,239,622.56-265,580.78

Finding the Fourth Proportional to 826,939.94, 1,239,622.56 and 265,580.78

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Solution

The fourth proportional to 826,939.94, 1,239,622.56 and 265,580.78 is: 398,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,939.94 : 1,239,622.56 = 265,580.78 : x
  2. Step 2: Convert to fraction form
    826,939.94/1,239,622.56 = 265,580.78/x
  3. Step 3: Cross multiply
    826,939.94x = 1,239,622.56 × 265,580.78
  4. Step 4: Simplify right side
    826,939.94x = 329,219,926,390.40
  5. Step 5: Solve for x
    x = 329,219,926,390.40/826,939.94
  6. Step 6: Final answer
    x = 398,118.30

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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.