Home / 620,340.42-929,919.69-199,320.78

Finding the Fourth Proportional to 620,340.42, 929,919.69 and 199,320.78

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Solution

The fourth proportional to 620,340.42, 929,919.69 and 199,320.78 is: 298,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,340.42 : 929,919.69 = 199,320.78 : x
  2. Step 2: Convert to fraction form
    620,340.42/929,919.69 = 199,320.78/x
  3. Step 3: Cross multiply
    620,340.42x = 929,919.69 × 199,320.78
  4. Step 4: Simplify right side
    620,340.42x = 185,352,317,948.16
  5. Step 5: Solve for x
    x = 185,352,317,948.16/620,340.42
  6. Step 6: Final answer
    x = 298,791.30

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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.