Home / 778,189.72-1,167,393.72-272,634.88

Finding the Fourth Proportional to 778,189.72, 1,167,393.72 and 272,634.88

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Solution

The fourth proportional to 778,189.72, 1,167,393.72 and 272,634.88 is: 408,990.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,189.72 : 1,167,393.72 = 272,634.88 : x
  2. Step 2: Convert to fraction form
    778,189.72/1,167,393.72 = 272,634.88/x
  3. Step 3: Cross multiply
    778,189.72x = 1,167,393.72 × 272,634.88
  4. Step 4: Simplify right side
    778,189.72x = 318,272,246,764.95
  5. Step 5: Solve for x
    x = 318,272,246,764.95/778,189.72
  6. Step 6: Final answer
    x = 408,990.56

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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.