Home / 419,725,261.36-628,744,725.62-209,001,101.38

Finding the Fourth Proportional to 419,725,261.36, 628,744,725.62 and 209,001,101.38

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Solution

The fourth proportional to 419,725,261.36, 628,744,725.62 and 209,001,101.38 is: 313,081,799.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,725,261.36 : 628,744,725.62 = 209,001,101.38 : x
  2. Step 2: Convert to fraction form
    419,725,261.36/628,744,725.62 = 209,001,101.38/x
  3. Step 3: Cross multiply
    419,725,261.36x = 628,744,725.62 × 209,001,101.38
  4. Step 4: Simplify right side
    419,725,261.36x = 131,408,340,141,445,904
  5. Step 5: Solve for x
    x = 131,408,340,141,445,904/419,725,261.36
  6. Step 6: Final answer
    x = 313,081,799.55

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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.