Home / 919,420.38-1,268,974.86-575,416.20

Finding the Fourth Proportional to 919,420.38, 1,268,974.86 and 575,416.20

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Solution

The fourth proportional to 919,420.38, 1,268,974.86 and 575,416.20 is: 794,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,420.38 : 1,268,974.86 = 575,416.20 : x
  2. Step 2: Convert to fraction form
    919,420.38/1,268,974.86 = 575,416.20/x
  3. Step 3: Cross multiply
    919,420.38x = 1,268,974.86 × 575,416.20
  4. Step 4: Simplify right side
    919,420.38x = 730,188,691,836.73
  5. Step 5: Solve for x
    x = 730,188,691,836.73/919,420.38
  6. Step 6: Final answer
    x = 794,183.71

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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.