Home / 1,313,002.80-1,811,942.10-709,390.80

Finding the Fourth Proportional to 1,313,002.80, 1,811,942.10 and 709,390.80

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Solution

The fourth proportional to 1,313,002.80, 1,811,942.10 and 709,390.80 is: 978,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,002.80 : 1,811,942.10 = 709,390.80 : x
  2. Step 2: Convert to fraction form
    1,313,002.80/1,811,942.10 = 709,390.80/x
  3. Step 3: Cross multiply
    1,313,002.80x = 1,811,942.10 × 709,390.80
  4. Step 4: Simplify right side
    1,313,002.80x = 1,285,375,055,872.68
  5. Step 5: Solve for x
    x = 1,285,375,055,872.68/1,313,002.80
  6. Step 6: Final answer
    x = 978,958.35

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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.