Home / 1,282,146.78-1,769,243.82-709,174.62

Finding the Fourth Proportional to 1,282,146.78, 1,769,243.82 and 709,174.62

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Solution

The fourth proportional to 1,282,146.78, 1,769,243.82 and 709,174.62 is: 978,595.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,146.78 : 1,769,243.82 = 709,174.62 : x
  2. Step 2: Convert to fraction form
    1,282,146.78/1,769,243.82 = 709,174.62/x
  3. Step 3: Cross multiply
    1,282,146.78x = 1,769,243.82 × 709,174.62
  4. Step 4: Simplify right side
    1,282,146.78x = 1,254,702,813,735.85
  5. Step 5: Solve for x
    x = 1,254,702,813,735.85/1,282,146.78
  6. Step 6: Final answer
    x = 978,595.30

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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.