Home / 419,725,257.86-628,744,720.37-209,001,097.87

Finding the Fourth Proportional to 419,725,257.86, 628,744,720.37 and 209,001,097.87

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Solution

The fourth proportional to 419,725,257.86, 628,744,720.37 and 209,001,097.87 is: 313,081,794.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,725,257.86 : 628,744,720.37 = 209,001,097.87 : x
  2. Step 2: Convert to fraction form
    419,725,257.86/628,744,720.37 = 209,001,097.87/x
  3. Step 3: Cross multiply
    419,725,257.86x = 628,744,720.37 × 209,001,097.87
  4. Step 4: Simplify right side
    419,725,257.86x = 131,408,336,836,445,360
  5. Step 5: Solve for x
    x = 131,408,336,836,445,360/419,725,257.86
  6. Step 6: Final answer
    x = 313,081,794.28

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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.