Home / 861,455.20-1,292,273.52-300,494.56

Finding the Fourth Proportional to 861,455.20, 1,292,273.52 and 300,494.56

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Solution

The fourth proportional to 861,455.20, 1,292,273.52 and 300,494.56 is: 450,773.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,455.20 : 1,292,273.52 = 300,494.56 : x
  2. Step 2: Convert to fraction form
    861,455.20/1,292,273.52 = 300,494.56/x
  3. Step 3: Cross multiply
    861,455.20x = 1,292,273.52 × 300,494.56
  4. Step 4: Simplify right side
    861,455.20x = 388,321,162,792.05
  5. Step 5: Solve for x
    x = 388,321,162,792.05/861,455.20
  6. Step 6: Final answer
    x = 450,773.49

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1.5x scale

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.