Home / 389,961.64-584,940.92-123,742.91

Finding the Fourth Proportional to 389,961.64, 584,940.92 and 123,742.91

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Solution

The fourth proportional to 389,961.64, 584,940.92 and 123,742.91 is: 185,613.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,961.64 : 584,940.92 = 123,742.91 : x
  2. Step 2: Convert to fraction form
    389,961.64/584,940.92 = 123,742.91/x
  3. Step 3: Cross multiply
    389,961.64x = 584,940.92 × 123,742.91
  4. Step 4: Simplify right side
    389,961.64x = 72,382,291,618.88
  5. Step 5: Solve for x
    x = 72,382,291,618.88/389,961.64
  6. Step 6: Final answer
    x = 185,613.88

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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.