Home / 1,321,230.30-1,981,845.45-479,672.70

Finding the Fourth Proportional to 1,321,230.30, 1,981,845.45 and 479,672.70

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Solution

The fourth proportional to 1,321,230.30, 1,981,845.45 and 479,672.70 is: 719,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,230.30 : 1,981,845.45 = 479,672.70 : x
  2. Step 2: Convert to fraction form
    1,321,230.30/1,981,845.45 = 479,672.70/x
  3. Step 3: Cross multiply
    1,321,230.30x = 1,981,845.45 × 479,672.70
  4. Step 4: Simplify right side
    1,321,230.30x = 950,637,157,984.22
  5. Step 5: Solve for x
    x = 950,637,157,984.22/1,321,230.30
  6. Step 6: Final answer
    x = 719,509.05

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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.