Home / 426,028.22-638,556.41-266,177.66

Finding the Fourth Proportional to 426,028.22, 638,556.41 and 266,177.66

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Solution

The fourth proportional to 426,028.22, 638,556.41 and 266,177.66 is: 398,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,028.22 : 638,556.41 = 266,177.66 : x
  2. Step 2: Convert to fraction form
    426,028.22/638,556.41 = 266,177.66/x
  3. Step 3: Cross multiply
    426,028.22x = 638,556.41 × 266,177.66
  4. Step 4: Simplify right side
    426,028.22x = 169,969,450,991.80
  5. Step 5: Solve for x
    x = 169,969,450,991.80/426,028.22
  6. Step 6: Final answer
    x = 398,962.89

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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.