Home / 1,321,439.65-1,982,042.83-479,998.69

Finding the Fourth Proportional to 1,321,439.65, 1,982,042.83 and 479,998.69

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Solution

The fourth proportional to 1,321,439.65, 1,982,042.83 and 479,998.69 is: 719,955.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,439.65 : 1,982,042.83 = 479,998.69 : x
  2. Step 2: Convert to fraction form
    1,321,439.65/1,982,042.83 = 479,998.69/x
  3. Step 3: Cross multiply
    1,321,439.65x = 1,982,042.83 × 479,998.69
  4. Step 4: Simplify right side
    1,321,439.65x = 951,377,961,923.89
  5. Step 5: Solve for x
    x = 951,377,961,923.89/1,321,439.65
  6. Step 6: Final answer
    x = 719,955.66

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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.