Home / 1,389,087.18-2,082,209.91-939,855.48

Finding the Fourth Proportional to 1,389,087.18, 2,082,209.91 and 939,855.48

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Solution

The fourth proportional to 1,389,087.18, 2,082,209.91 and 939,855.48 is: 1,408,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,087.18 : 2,082,209.91 = 939,855.48 : x
  2. Step 2: Convert to fraction form
    1,389,087.18/2,082,209.91 = 939,855.48/x
  3. Step 3: Cross multiply
    1,389,087.18x = 2,082,209.91 × 939,855.48
  4. Step 4: Simplify right side
    1,389,087.18x = 1,956,976,394,423.81
  5. Step 5: Solve for x
    x = 1,956,976,394,423.81/1,389,087.18
  6. Step 6: Final answer
    x = 1,408,821.87

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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.