Home / 1,991,073.20-2,987,776.20-729,028.40

Finding the Fourth Proportional to 1,991,073.20, 2,987,776.20 and 729,028.40

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Solution

The fourth proportional to 1,991,073.20, 2,987,776.20 and 729,028.40 is: 1,093,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,073.20 : 2,987,776.20 = 729,028.40 : x
  2. Step 2: Convert to fraction form
    1,991,073.20/2,987,776.20 = 729,028.40/x
  3. Step 3: Cross multiply
    1,991,073.20x = 2,987,776.20 × 729,028.40
  4. Step 4: Simplify right side
    1,991,073.20x = 2,178,173,702,644.08
  5. Step 5: Solve for x
    x = 2,178,173,702,644.08/1,991,073.20
  6. Step 6: Final answer
    x = 1,093,969.68

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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.