Home / 1,206,428.82-1,809,642.05-307,870.57

Finding the Fourth Proportional to 1,206,428.82, 1,809,642.05 and 307,870.57

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Solution

The fourth proportional to 1,206,428.82, 1,809,642.05 and 307,870.57 is: 461,805.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,428.82 : 1,809,642.05 = 307,870.57 : x
  2. Step 2: Convert to fraction form
    1,206,428.82/1,809,642.05 = 307,870.57/x
  3. Step 3: Cross multiply
    1,206,428.82x = 1,809,642.05 × 307,870.57
  4. Step 4: Simplify right side
    1,206,428.82x = 557,135,529,429.47
  5. Step 5: Solve for x
    x = 557,135,529,429.47/1,206,428.82
  6. Step 6: Final answer
    x = 461,805.55

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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.