Home / 1,208,299.90-1,667,396.79-664,458.61

Finding the Fourth Proportional to 1,208,299.90, 1,667,396.79 and 664,458.61

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Solution

The fourth proportional to 1,208,299.90, 1,667,396.79 and 664,458.61 is: 916,921.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,299.90 : 1,667,396.79 = 664,458.61 : x
  2. Step 2: Convert to fraction form
    1,208,299.90/1,667,396.79 = 664,458.61/x
  3. Step 3: Cross multiply
    1,208,299.90x = 1,667,396.79 × 664,458.61
  4. Step 4: Simplify right side
    1,208,299.90x = 1,107,916,153,401.86
  5. Step 5: Solve for x
    x = 1,107,916,153,401.86/1,208,299.90
  6. Step 6: Final answer
    x = 916,921.50

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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.