Home / 787,390.38-1,086,776.46-481,721.58

Finding the Fourth Proportional to 787,390.38, 1,086,776.46 and 481,721.58

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Solution

The fourth proportional to 787,390.38, 1,086,776.46 and 481,721.58 is: 664,884.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,390.38 : 1,086,776.46 = 481,721.58 : x
  2. Step 2: Convert to fraction form
    787,390.38/1,086,776.46 = 481,721.58/x
  3. Step 3: Cross multiply
    787,390.38x = 1,086,776.46 × 481,721.58
  4. Step 4: Simplify right side
    787,390.38x = 523,523,673,418.01
  5. Step 5: Solve for x
    x = 523,523,673,418.01/787,390.38
  6. Step 6: Final answer
    x = 664,884.52

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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.