Home / 451,021.56-621,980.28-269,704.14

Finding the Fourth Proportional to 451,021.56, 621,980.28 and 269,704.14

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Solution

The fourth proportional to 451,021.56, 621,980.28 and 269,704.14 is: 371,934.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,021.56 : 621,980.28 = 269,704.14 : x
  2. Step 2: Convert to fraction form
    451,021.56/621,980.28 = 269,704.14/x
  3. Step 3: Cross multiply
    451,021.56x = 621,980.28 × 269,704.14
  4. Step 4: Simplify right side
    451,021.56x = 167,750,656,514.36
  5. Step 5: Solve for x
    x = 167,750,656,514.36/451,021.56
  6. Step 6: Final answer
    x = 371,934.89

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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.