Home / 3,209,187.78-4,813,744.68-780,354.72

Finding the Fourth Proportional to 3,209,187.78, 4,813,744.68 and 780,354.72

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Solution

The fourth proportional to 3,209,187.78, 4,813,744.68 and 780,354.72 is: 1,170,523.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209,187.78 : 4,813,744.68 = 780,354.72 : x
  2. Step 2: Convert to fraction form
    3,209,187.78/4,813,744.68 = 780,354.72/x
  3. Step 3: Cross multiply
    3,209,187.78x = 4,813,744.68 × 780,354.72
  4. Step 4: Simplify right side
    3,209,187.78x = 3,756,428,381,912.89
  5. Step 5: Solve for x
    x = 3,756,428,381,912.89/3,209,187.78
  6. Step 6: Final answer
    x = 1,170,523.09

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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.