Home / 1,991,805.60-2,988,680.40-926,299.20

Finding the Fourth Proportional to 1,991,805.60, 2,988,680.40 and 926,299.20

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Solution

The fourth proportional to 1,991,805.60, 2,988,680.40 and 926,299.20 is: 1,389,900.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,805.60 : 2,988,680.40 = 926,299.20 : x
  2. Step 2: Convert to fraction form
    1,991,805.60/2,988,680.40 = 926,299.20/x
  3. Step 3: Cross multiply
    1,991,805.60x = 2,988,680.40 × 926,299.20
  4. Step 4: Simplify right side
    1,991,805.60x = 2,768,412,263,575.68
  5. Step 5: Solve for x
    x = 2,768,412,263,575.68/1,991,805.60
  6. Step 6: Final answer
    x = 1,389,900.83

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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.