Home / 1,289,817.60-1,935,601.20-839,441.40

Finding the Fourth Proportional to 1,289,817.60, 1,935,601.20 and 839,441.40

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Solution

The fourth proportional to 1,289,817.60, 1,935,601.20 and 839,441.40 is: 1,259,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,817.60 : 1,935,601.20 = 839,441.40 : x
  2. Step 2: Convert to fraction form
    1,289,817.60/1,935,601.20 = 839,441.40/x
  3. Step 3: Cross multiply
    1,289,817.60x = 1,935,601.20 × 839,441.40
  4. Step 4: Simplify right side
    1,289,817.60x = 1,624,823,781,169.68
  5. Step 5: Solve for x
    x = 1,624,823,781,169.68/1,289,817.60
  6. Step 6: Final answer
    x = 1,259,731.44

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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.