Home / 418,914.74-628,962.60-300,521.54

Finding the Fourth Proportional to 418,914.74, 628,962.60 and 300,521.54

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Solution

The fourth proportional to 418,914.74, 628,962.60 and 300,521.54 is: 451,205.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,914.74 : 628,962.60 = 300,521.54 : x
  2. Step 2: Convert to fraction form
    418,914.74/628,962.60 = 300,521.54/x
  3. Step 3: Cross multiply
    418,914.74x = 628,962.60 × 300,521.54
  4. Step 4: Simplify right side
    418,914.74x = 189,016,809,154.40
  5. Step 5: Solve for x
    x = 189,016,809,154.40/418,914.74
  6. Step 6: Final answer
    x = 451,205.92

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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.