Home / 1,289,986.64-1,780,136.16-709,205.54

Finding the Fourth Proportional to 1,289,986.64, 1,780,136.16 and 709,205.54

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Solution

The fourth proportional to 1,289,986.64, 1,780,136.16 and 709,205.54 is: 978,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,986.64 : 1,780,136.16 = 709,205.54 : x
  2. Step 2: Convert to fraction form
    1,289,986.64/1,780,136.16 = 709,205.54/x
  3. Step 3: Cross multiply
    1,289,986.64x = 1,780,136.16 × 709,205.54
  4. Step 4: Simplify right side
    1,289,986.64x = 1,262,482,426,626.33
  5. Step 5: Solve for x
    x = 1,262,482,426,626.33/1,289,986.64
  6. Step 6: Final answer
    x = 978,678.68

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