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Finding the Fourth Proportional to 442,858,679.70, 664,288,019.55 and 320,414,673.30

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Solution

The fourth proportional to 442,858,679.70, 664,288,019.55 and 320,414,673.30 is: 480,622,009.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,858,679.70 : 664,288,019.55 = 320,414,673.30 : x
  2. Step 2: Convert to fraction form
    442,858,679.70/664,288,019.55 = 320,414,673.30/x
  3. Step 3: Cross multiply
    442,858,679.70x = 664,288,019.55 × 320,414,673.30
  4. Step 4: Simplify right side
    442,858,679.70x = 212,847,628,761,217,248
  5. Step 5: Solve for x
    x = 212,847,628,761,217,248/442,858,679.70
  6. Step 6: Final answer
    x = 480,622,009.95

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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.