Home / 785,380.72-1,177,396.40-272,979.28

Finding the Fourth Proportional to 785,380.72, 1,177,396.40 and 272,979.28

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Solution

The fourth proportional to 785,380.72, 1,177,396.40 and 272,979.28 is: 409,234.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,380.72 : 1,177,396.40 = 272,979.28 : x
  2. Step 2: Convert to fraction form
    785,380.72/1,177,396.40 = 272,979.28/x
  3. Step 3: Cross multiply
    785,380.72x = 1,177,396.40 × 272,979.28
  4. Step 4: Simplify right side
    785,380.72x = 321,404,821,546.59
  5. Step 5: Solve for x
    x = 321,404,821,546.59/785,380.72
  6. Step 6: Final answer
    x = 409,234.42

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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.