Home / 455,717.70-628,927.20-251,786.52

Finding the Fourth Proportional to 455,717.70, 628,927.20 and 251,786.52

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Solution

The fourth proportional to 455,717.70, 628,927.20 and 251,786.52 is: 347,485.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,717.70 : 628,927.20 = 251,786.52 : x
  2. Step 2: Convert to fraction form
    455,717.70/628,927.20 = 251,786.52/x
  3. Step 3: Cross multiply
    455,717.70x = 628,927.20 × 251,786.52
  4. Step 4: Simplify right side
    455,717.70x = 158,355,391,021.34
  5. Step 5: Solve for x
    x = 158,355,391,021.34/455,717.70
  6. Step 6: Final answer
    x = 347,485.72

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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.