Home / 1,217,243.78-1,679,766.09-673,409.78

Finding the Fourth Proportional to 1,217,243.78, 1,679,766.09 and 673,409.78

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Solution

The fourth proportional to 1,217,243.78, 1,679,766.09 and 673,409.78 is: 929,288.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,243.78 : 1,679,766.09 = 673,409.78 : x
  2. Step 2: Convert to fraction form
    1,217,243.78/1,679,766.09 = 673,409.78/x
  3. Step 3: Cross multiply
    1,217,243.78x = 1,679,766.09 × 673,409.78
  4. Step 4: Simplify right side
    1,217,243.78x = 1,131,170,913,118.36
  5. Step 5: Solve for x
    x = 1,131,170,913,118.36/1,217,243.78
  6. Step 6: Final answer
    x = 929,288.72

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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.