Home / 411,212,622.33-616,821,033.03-138,585,751.29

Finding the Fourth Proportional to 411,212,622.33, 616,821,033.03 and 138,585,751.29

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Solution

The fourth proportional to 411,212,622.33, 616,821,033.03 and 138,585,751.29 is: 207,879,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,212,622.33 : 616,821,033.03 = 138,585,751.29 : x
  2. Step 2: Convert to fraction form
    411,212,622.33/616,821,033.03 = 138,585,751.29/x
  3. Step 3: Cross multiply
    411,212,622.33x = 616,821,033.03 × 138,585,751.29
  4. Step 4: Simplify right side
    411,212,622.33x = 85,482,606,273,936,448
  5. Step 5: Solve for x
    x = 85,482,606,273,936,448/411,212,622.33
  6. Step 6: Final answer
    x = 207,879,334.51

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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.