Home / 685,210.38-1,027,829.67-211,895.58

Finding the Fourth Proportional to 685,210.38, 1,027,829.67 and 211,895.58

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Solution

The fourth proportional to 685,210.38, 1,027,829.67 and 211,895.58 is: 317,847.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,210.38 : 1,027,829.67 = 211,895.58 : x
  2. Step 2: Convert to fraction form
    685,210.38/1,027,829.67 = 211,895.58/x
  3. Step 3: Cross multiply
    685,210.38x = 1,027,829.67 × 211,895.58
  4. Step 4: Simplify right side
    685,210.38x = 217,792,564,065.86
  5. Step 5: Solve for x
    x = 217,792,564,065.86/685,210.38
  6. Step 6: Final answer
    x = 317,847.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.