Home / 1,389,105.60-2,086,768.80-1,336,228.80

Finding the Fourth Proportional to 1,389,105.60, 2,086,768.80 and 1,336,228.80

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Solution

The fourth proportional to 1,389,105.60, 2,086,768.80 and 1,336,228.80 is: 2,007,335.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,105.60 : 2,086,768.80 = 1,336,228.80 : x
  2. Step 2: Convert to fraction form
    1,389,105.60/2,086,768.80 = 1,336,228.80/x
  3. Step 3: Cross multiply
    1,389,105.60x = 2,086,768.80 × 1,336,228.80
  4. Step 4: Simplify right side
    1,389,105.60x = 2,788,400,569,501.44
  5. Step 5: Solve for x
    x = 2,788,400,569,501.44/1,389,105.60
  6. Step 6: Final answer
    x = 2,007,335.20

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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.