Home / 892,128.72-1,231,138.86-484,230.64

Finding the Fourth Proportional to 892,128.72, 1,231,138.86 and 484,230.64

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Solution

The fourth proportional to 892,128.72, 1,231,138.86 and 484,230.64 is: 668,238.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,128.72 : 1,231,138.86 = 484,230.64 : x
  2. Step 2: Convert to fraction form
    892,128.72/1,231,138.86 = 484,230.64/x
  3. Step 3: Cross multiply
    892,128.72x = 1,231,138.86 × 484,230.64
  4. Step 4: Simplify right side
    892,128.72x = 596,155,158,106.67
  5. Step 5: Solve for x
    x = 596,155,158,106.67/892,128.72
  6. Step 6: Final answer
    x = 668,238.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.