Home / 1,138,209.20-1,707,313.80-1,085,721.20

Finding the Fourth Proportional to 1,138,209.20, 1,707,313.80 and 1,085,721.20

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Solution

The fourth proportional to 1,138,209.20, 1,707,313.80 and 1,085,721.20 is: 1,628,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,209.20 : 1,707,313.80 = 1,085,721.20 : x
  2. Step 2: Convert to fraction form
    1,138,209.20/1,707,313.80 = 1,085,721.20/x
  3. Step 3: Cross multiply
    1,138,209.20x = 1,707,313.80 × 1,085,721.20
  4. Step 4: Simplify right side
    1,138,209.20x = 1,853,666,787,712.56
  5. Step 5: Solve for x
    x = 1,853,666,787,712.56/1,138,209.20
  6. Step 6: Final answer
    x = 1,628,581.80

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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.