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Finding the Fourth Proportional to 555,394.25, 766,442.72 and 300,745.44

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Solution

The fourth proportional to 555,394.25, 766,442.72 and 300,745.44 is: 415,027.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,394.25 : 766,442.72 = 300,745.44 : x
  2. Step 2: Convert to fraction form
    555,394.25/766,442.72 = 300,745.44/x
  3. Step 3: Cross multiply
    555,394.25x = 766,442.72 × 300,745.44
  4. Step 4: Simplify right side
    555,394.25x = 230,504,153,813.06
  5. Step 5: Solve for x
    x = 230,504,153,813.06/555,394.25
  6. Step 6: Final answer
    x = 415,027.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.