Home / 1,333,107.82-1,999,961.86-422,345.21

Finding the Fourth Proportional to 1,333,107.82, 1,999,961.86 and 422,345.21

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Solution

The fourth proportional to 1,333,107.82, 1,999,961.86 and 422,345.21 is: 633,612.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,107.82 : 1,999,961.86 = 422,345.21 : x
  2. Step 2: Convert to fraction form
    1,333,107.82/1,999,961.86 = 422,345.21/x
  3. Step 3: Cross multiply
    1,333,107.82x = 1,999,961.86 × 422,345.21
  4. Step 4: Simplify right side
    1,333,107.82x = 844,674,311,753.69
  5. Step 5: Solve for x
    x = 844,674,311,753.69/1,333,107.82
  6. Step 6: Final answer
    x = 633,612.90

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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.