Home / 1,290,500.38-1,780,797.91-709,763.79

Finding the Fourth Proportional to 1,290,500.38, 1,780,797.91 and 709,763.79

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Solution

The fourth proportional to 1,290,500.38, 1,780,797.91 and 709,763.79 is: 979,423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,500.38 : 1,780,797.91 = 709,763.79 : x
  2. Step 2: Convert to fraction form
    1,290,500.38/1,780,797.91 = 709,763.79/x
  3. Step 3: Cross multiply
    1,290,500.38x = 1,780,797.91 × 709,763.79
  4. Step 4: Simplify right side
    1,290,500.38x = 1,263,945,873,825.68
  5. Step 5: Solve for x
    x = 1,263,945,873,825.68/1,290,500.38
  6. Step 6: Final answer
    x = 979,423.09

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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.