Home / 687,972.66-1,031,922.54-214,603.80

Finding the Fourth Proportional to 687,972.66, 1,031,922.54 and 214,603.80

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Solution

The fourth proportional to 687,972.66, 1,031,922.54 and 214,603.80 is: 321,894.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,972.66 : 1,031,922.54 = 214,603.80 : x
  2. Step 2: Convert to fraction form
    687,972.66/1,031,922.54 = 214,603.80/x
  3. Step 3: Cross multiply
    687,972.66x = 1,031,922.54 × 214,603.80
  4. Step 4: Simplify right side
    687,972.66x = 221,454,498,389.65
  5. Step 5: Solve for x
    x = 221,454,498,389.65/687,972.66
  6. Step 6: Final answer
    x = 321,894.33

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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.