Home / 1,204,449.12-1,661,986.57-688,236.40

Finding the Fourth Proportional to 1,204,449.12, 1,661,986.57 and 688,236.40

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Solution

The fourth proportional to 1,204,449.12, 1,661,986.57 and 688,236.40 is: 949,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204,449.12 : 1,661,986.57 = 688,236.40 : x
  2. Step 2: Convert to fraction form
    1,204,449.12/1,661,986.57 = 688,236.40/x
  3. Step 3: Cross multiply
    1,204,449.12x = 1,661,986.57 × 688,236.40
  4. Step 4: Simplify right side
    1,204,449.12x = 1,143,839,642,034.03
  5. Step 5: Solve for x
    x = 1,143,839,642,034.03/1,204,449.12
  6. Step 6: Final answer
    x = 949,678.68

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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.