Home / 1,109,266.74-1,664,115.78-426,103.65

Finding the Fourth Proportional to 1,109,266.74, 1,664,115.78 and 426,103.65

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Solution

The fourth proportional to 1,109,266.74, 1,664,115.78 and 426,103.65 is: 639,238.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,266.74 : 1,664,115.78 = 426,103.65 : x
  2. Step 2: Convert to fraction form
    1,109,266.74/1,664,115.78 = 426,103.65/x
  3. Step 3: Cross multiply
    1,109,266.74x = 1,664,115.78 × 426,103.65
  4. Step 4: Simplify right side
    1,109,266.74x = 709,085,807,880.60
  5. Step 5: Solve for x
    x = 709,085,807,880.60/1,109,266.74
  6. Step 6: Final answer
    x = 639,238.32

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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.