Home / 780,356.87-1,170,629.09-274,813.35

Finding the Fourth Proportional to 780,356.87, 1,170,629.09 and 274,813.35

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Solution

The fourth proportional to 780,356.87, 1,170,629.09 and 274,813.35 is: 412,253.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,356.87 : 1,170,629.09 = 274,813.35 : x
  2. Step 2: Convert to fraction form
    780,356.87/1,170,629.09 = 274,813.35/x
  3. Step 3: Cross multiply
    780,356.87x = 1,170,629.09 × 274,813.35
  4. Step 4: Simplify right side
    780,356.87x = 321,704,500,456.29
  5. Step 5: Solve for x
    x = 321,704,500,456.29/780,356.87
  6. Step 6: Final answer
    x = 412,253.05

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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.