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Finding the Fourth Proportional to 906,861.60, 1,359,903.60 and 457,408.80

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Solution

The fourth proportional to 906,861.60, 1,359,903.60 and 457,408.80 is: 685,917.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,861.60 : 1,359,903.60 = 457,408.80 : x
  2. Step 2: Convert to fraction form
    906,861.60/1,359,903.60 = 457,408.80/x
  3. Step 3: Cross multiply
    906,861.60x = 1,359,903.60 × 457,408.80
  4. Step 4: Simplify right side
    906,861.60x = 622,031,873,791.68
  5. Step 5: Solve for x
    x = 622,031,873,791.68/906,861.60
  6. Step 6: Final answer
    x = 685,917.09

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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.