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Finding the Fourth Proportional to 752,225.76, 1,128,444 and 219,785.76

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Solution

The fourth proportional to 752,225.76, 1,128,444 and 219,785.76 is: 329,709.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,225.76 : 1,128,444 = 219,785.76 : x
  2. Step 2: Convert to fraction form
    752,225.76/1,128,444 = 219,785.76/x
  3. Step 3: Cross multiply
    752,225.76x = 1,128,444 × 219,785.76
  4. Step 4: Simplify right side
    752,225.76x = 248,015,922,157.44
  5. Step 5: Solve for x
    x = 248,015,922,157.44/752,225.76
  6. Step 6: Final answer
    x = 329,709.42

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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.