Home / 620,749.20-931,037.40-200,067.60

Finding the Fourth Proportional to 620,749.20, 931,037.40 and 200,067.60

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Solution

The fourth proportional to 620,749.20, 931,037.40 and 200,067.60 is: 300,073.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,749.20 : 931,037.40 = 200,067.60 : x
  2. Step 2: Convert to fraction form
    620,749.20/931,037.40 = 200,067.60/x
  3. Step 3: Cross multiply
    620,749.20x = 931,037.40 × 200,067.60
  4. Step 4: Simplify right side
    620,749.20x = 186,270,418,128.24
  5. Step 5: Solve for x
    x = 186,270,418,128.24/620,749.20
  6. Step 6: Final answer
    x = 300,073.55

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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.