Home / 685,087.65-1,027,729.94-211,809.91

Finding the Fourth Proportional to 685,087.65, 1,027,729.94 and 211,809.91

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Solution

The fourth proportional to 685,087.65, 1,027,729.94 and 211,809.91 is: 317,745.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,087.65 : 1,027,729.94 = 211,809.91 : x
  2. Step 2: Convert to fraction form
    685,087.65/1,027,729.94 = 211,809.91/x
  3. Step 3: Cross multiply
    685,087.65x = 1,027,729.94 × 211,809.91
  4. Step 4: Simplify right side
    685,087.65x = 217,683,386,095.71
  5. Step 5: Solve for x
    x = 217,683,386,095.71/685,087.65
  6. Step 6: Final answer
    x = 317,745.31

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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.