Home / 686,033.24-1,029,149.48-212,756.72

Finding the Fourth Proportional to 686,033.24, 1,029,149.48 and 212,756.72

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Solution

The fourth proportional to 686,033.24, 1,029,149.48 and 212,756.72 is: 319,165.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,033.24 : 1,029,149.48 = 212,756.72 : x
  2. Step 2: Convert to fraction form
    686,033.24/1,029,149.48 = 212,756.72/x
  3. Step 3: Cross multiply
    686,033.24x = 1,029,149.48 × 212,756.72
  4. Step 4: Simplify right side
    686,033.24x = 218,958,463,140.65
  5. Step 5: Solve for x
    x = 218,958,463,140.65/686,033.24
  6. Step 6: Final answer
    x = 319,165.97

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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.