Home / 787,107.12-1,180,745.05-218,490.62

Finding the Fourth Proportional to 787,107.12, 1,180,745.05 and 218,490.62

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Solution

The fourth proportional to 787,107.12, 1,180,745.05 and 218,490.62 is: 327,759.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,107.12 : 1,180,745.05 = 218,490.62 : x
  2. Step 2: Convert to fraction form
    787,107.12/1,180,745.05 = 218,490.62/x
  3. Step 3: Cross multiply
    787,107.12x = 1,180,745.05 × 218,490.62
  4. Step 4: Simplify right side
    787,107.12x = 257,981,711,996.15
  5. Step 5: Solve for x
    x = 257,981,711,996.15/787,107.12
  6. Step 6: Final answer
    x = 327,759.34

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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.