Home / 686,450.92-1,029,665.33-213,136.73

Finding the Fourth Proportional to 686,450.92, 1,029,665.33 and 213,136.73

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Solution

The fourth proportional to 686,450.92, 1,029,665.33 and 213,136.73 is: 319,701.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,450.92 : 1,029,665.33 = 213,136.73 : x
  2. Step 2: Convert to fraction form
    686,450.92/1,029,665.33 = 213,136.73/x
  3. Step 3: Cross multiply
    686,450.92x = 1,029,665.33 × 213,136.73
  4. Step 4: Simplify right side
    686,450.92x = 219,459,501,430.57
  5. Step 5: Solve for x
    x = 219,459,501,430.57/686,450.92
  6. Step 6: Final answer
    x = 319,701.66

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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.