Home / 687,297.37-948,424.78-381,354.35

Finding the Fourth Proportional to 687,297.37, 948,424.78 and 381,354.35

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Solution

The fourth proportional to 687,297.37, 948,424.78 and 381,354.35 is: 526,243.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,297.37 : 948,424.78 = 381,354.35 : x
  2. Step 2: Convert to fraction form
    687,297.37/948,424.78 = 381,354.35/x
  3. Step 3: Cross multiply
    687,297.37x = 948,424.78 × 381,354.35
  4. Step 4: Simplify right side
    687,297.37x = 361,685,915,500.79
  5. Step 5: Solve for x
    x = 361,685,915,500.79/687,297.37
  6. Step 6: Final answer
    x = 526,243.71

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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.