Home / 745,078.55-1,028,179.83-422,769.41

Finding the Fourth Proportional to 745,078.55, 1,028,179.83 and 422,769.41

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Solution

The fourth proportional to 745,078.55, 1,028,179.83 and 422,769.41 is: 583,405.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,078.55 : 1,028,179.83 = 422,769.41 : x
  2. Step 2: Convert to fraction form
    745,078.55/1,028,179.83 = 422,769.41/x
  3. Step 3: Cross multiply
    745,078.55x = 1,028,179.83 × 422,769.41
  4. Step 4: Simplify right side
    745,078.55x = 434,682,980,103.00
  5. Step 5: Solve for x
    x = 434,682,980,103.00/745,078.55
  6. Step 6: Final answer
    x = 583,405.58

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1.5x scale

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.