Home / 1,420,931.20-2,131,396.80-859,676.80

Finding the Fourth Proportional to 1,420,931.20, 2,131,396.80 and 859,676.80

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Solution

The fourth proportional to 1,420,931.20, 2,131,396.80 and 859,676.80 is: 1,289,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,931.20 : 2,131,396.80 = 859,676.80 : x
  2. Step 2: Convert to fraction form
    1,420,931.20/2,131,396.80 = 859,676.80/x
  3. Step 3: Cross multiply
    1,420,931.20x = 2,131,396.80 × 859,676.80
  4. Step 4: Simplify right side
    1,420,931.20x = 1,832,312,380,554.24
  5. Step 5: Solve for x
    x = 1,832,312,380,554.24/1,420,931.20
  6. Step 6: Final answer
    x = 1,289,515.20

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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.