Home / 1,389,921.42-2,086,227.00-670,769.37

Finding the Fourth Proportional to 1,389,921.42, 2,086,227.00 and 670,769.37

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Solution

The fourth proportional to 1,389,921.42, 2,086,227.00 and 670,769.37 is: 1,006,803.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,921.42 : 2,086,227.00 = 670,769.37 : x
  2. Step 2: Convert to fraction form
    1,389,921.42/2,086,227.00 = 670,769.37/x
  3. Step 3: Cross multiply
    1,389,921.42x = 2,086,227.00 × 670,769.37
  4. Step 4: Simplify right side
    1,389,921.42x = 1,399,377,180,805.73
  5. Step 5: Solve for x
    x = 1,399,377,180,805.73/1,389,921.42
  6. Step 6: Final answer
    x = 1,006,803.09

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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.