Home / 1,438,311.91-1,984,918.10-784,973.69

Finding the Fourth Proportional to 1,438,311.91, 1,984,918.10 and 784,973.69

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Solution

The fourth proportional to 1,438,311.91, 1,984,918.10 and 784,973.69 is: 1,083,289.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,311.91 : 1,984,918.10 = 784,973.69 : x
  2. Step 2: Convert to fraction form
    1,438,311.91/1,984,918.10 = 784,973.69/x
  3. Step 3: Cross multiply
    1,438,311.91x = 1,984,918.10 × 784,973.69
  4. Step 4: Simplify right side
    1,438,311.91x = 1,558,108,481,379.92
  5. Step 5: Solve for x
    x = 1,558,108,481,379.92/1,438,311.91
  6. Step 6: Final answer
    x = 1,083,289.71

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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.