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Finding the Fourth Proportional to 886,712.40, 1,329,809.40 and 318,027.60

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Solution

The fourth proportional to 886,712.40, 1,329,809.40 and 318,027.60 is: 476,948.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,712.40 : 1,329,809.40 = 318,027.60 : x
  2. Step 2: Convert to fraction form
    886,712.40/1,329,809.40 = 318,027.60/x
  3. Step 3: Cross multiply
    886,712.40x = 1,329,809.40 × 318,027.60
  4. Step 4: Simplify right side
    886,712.40x = 422,916,091,939.44
  5. Step 5: Solve for x
    x = 422,916,091,939.44/886,712.40
  6. Step 6: Final answer
    x = 476,948.44

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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.