Home / 685,379.10-1,028,097.90-212,073.42

Finding the Fourth Proportional to 685,379.10, 1,028,097.90 and 212,073.42

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Solution

The fourth proportional to 685,379.10, 1,028,097.90 and 212,073.42 is: 318,119.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,379.10 : 1,028,097.90 = 212,073.42 : x
  2. Step 2: Convert to fraction form
    685,379.10/1,028,097.90 = 212,073.42/x
  3. Step 3: Cross multiply
    685,379.10x = 1,028,097.90 × 212,073.42
  4. Step 4: Simplify right side
    685,379.10x = 218,032,237,747.82
  5. Step 5: Solve for x
    x = 218,032,237,747.82/685,379.10
  6. Step 6: Final answer
    x = 318,119.18

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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.