Home / 787,729.20-1,181,156.40-313,879.20

Finding the Fourth Proportional to 787,729.20, 1,181,156.40 and 313,879.20

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Solution

The fourth proportional to 787,729.20, 1,181,156.40 and 313,879.20 is: 470,644.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,729.20 : 1,181,156.40 = 313,879.20 : x
  2. Step 2: Convert to fraction form
    787,729.20/1,181,156.40 = 313,879.20/x
  3. Step 3: Cross multiply
    787,729.20x = 1,181,156.40 × 313,879.20
  4. Step 4: Simplify right side
    787,729.20x = 370,740,425,906.88
  5. Step 5: Solve for x
    x = 370,740,425,906.88/787,729.20
  6. Step 6: Final answer
    x = 470,644.51

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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.