Home / 778,469.76-1,074,325.68-438,930.72

Finding the Fourth Proportional to 778,469.76, 1,074,325.68 and 438,930.72

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Solution

The fourth proportional to 778,469.76, 1,074,325.68 and 438,930.72 is: 605,745.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,469.76 : 1,074,325.68 = 438,930.72 : x
  2. Step 2: Convert to fraction form
    778,469.76/1,074,325.68 = 438,930.72/x
  3. Step 3: Cross multiply
    778,469.76x = 1,074,325.68 × 438,930.72
  4. Step 4: Simplify right side
    778,469.76x = 471,554,544,236.89
  5. Step 5: Solve for x
    x = 471,554,544,236.89/778,469.76
  6. Step 6: Final answer
    x = 605,745.49

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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.