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Finding the Fourth Proportional to 488,408.40, 731,446.20 and 299,451.60

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Solution

The fourth proportional to 488,408.40, 731,446.20 and 299,451.60 is: 448,462.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,408.40 : 731,446.20 = 299,451.60 : x
  2. Step 2: Convert to fraction form
    488,408.40/731,446.20 = 299,451.60/x
  3. Step 3: Cross multiply
    488,408.40x = 731,446.20 × 299,451.60
  4. Step 4: Simplify right side
    488,408.40x = 219,032,734,903.92
  5. Step 5: Solve for x
    x = 219,032,734,903.92/488,408.40
  6. Step 6: Final answer
    x = 448,462.26

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1.5x scale

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.