Home / 442,868,009.60-664,302,014.40-419,192,313.05

Finding the Fourth Proportional to 442,868,009.60, 664,302,014.40 and 419,192,313.05

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Solution

The fourth proportional to 442,868,009.60, 664,302,014.40 and 419,192,313.05 is: 628,788,469.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,868,009.60 : 664,302,014.40 = 419,192,313.05 : x
  2. Step 2: Convert to fraction form
    442,868,009.60/664,302,014.40 = 419,192,313.05/x
  3. Step 3: Cross multiply
    442,868,009.60x = 664,302,014.40 × 419,192,313.05
  4. Step 4: Simplify right side
    442,868,009.60x = 278,470,297,980,110,400
  5. Step 5: Solve for x
    x = 278,470,297,980,110,400/442,868,009.60
  6. Step 6: Final answer
    x = 628,788,469.58

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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.