Home / 745,078.05-1,028,179.14-422,768.91

Finding the Fourth Proportional to 745,078.05, 1,028,179.14 and 422,768.91

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Solution

The fourth proportional to 745,078.05, 1,028,179.14 and 422,768.91 is: 583,404.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,078.05 : 1,028,179.14 = 422,768.91 : x
  2. Step 2: Convert to fraction form
    745,078.05/1,028,179.14 = 422,768.91/x
  3. Step 3: Cross multiply
    745,078.05x = 1,028,179.14 × 422,768.91
  4. Step 4: Simplify right side
    745,078.05x = 434,682,174,302.54
  5. Step 5: Solve for x
    x = 434,682,174,302.54/745,078.05
  6. Step 6: Final answer
    x = 583,404.89

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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.