Home / 411,212,638.60-616,821,057.42-138,585,767.56

Finding the Fourth Proportional to 411,212,638.60, 616,821,057.42 and 138,585,767.56

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Solution

The fourth proportional to 411,212,638.60, 616,821,057.42 and 138,585,767.56 is: 207,879,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,212,638.60 : 616,821,057.42 = 138,585,767.56 : x
  2. Step 2: Convert to fraction form
    411,212,638.60/616,821,057.42 = 138,585,767.56/x
  3. Step 3: Cross multiply
    411,212,638.60x = 616,821,057.42 × 138,585,767.56
  4. Step 4: Simplify right side
    411,212,638.60x = 85,482,619,689,721,536
  5. Step 5: Solve for x
    x = 85,482,619,689,721,536/411,212,638.60
  6. Step 6: Final answer
    x = 207,879,358.91

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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.