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Finding the Fourth Proportional to 511,874.40, 768,394.80 and 301,630.80

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Solution

The fourth proportional to 511,874.40, 768,394.80 and 301,630.80 is: 452,789.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,874.40 : 768,394.80 = 301,630.80 : x
  2. Step 2: Convert to fraction form
    511,874.40/768,394.80 = 301,630.80/x
  3. Step 3: Cross multiply
    511,874.40x = 768,394.80 × 301,630.80
  4. Step 4: Simplify right side
    511,874.40x = 231,771,538,239.84
  5. Step 5: Solve for x
    x = 231,771,538,239.84/511,874.40
  6. Step 6: Final answer
    x = 452,789.86

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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.