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Finding the Fourth Proportional to 488,558.40, 732,837.60 and 445,012.80

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Solution

The fourth proportional to 488,558.40, 732,837.60 and 445,012.80 is: 667,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,558.40 : 732,837.60 = 445,012.80 : x
  2. Step 2: Convert to fraction form
    488,558.40/732,837.60 = 445,012.80/x
  3. Step 3: Cross multiply
    488,558.40x = 732,837.60 × 445,012.80
  4. Step 4: Simplify right side
    488,558.40x = 326,122,112,321.28
  5. Step 5: Solve for x
    x = 326,122,112,321.28/488,558.40
  6. Step 6: Final answer
    x = 667,519.20

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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.