Home / 1,327,697.40-1,991,315.70-485,815.80

Finding the Fourth Proportional to 1,327,697.40, 1,991,315.70 and 485,815.80

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Solution

The fourth proportional to 1,327,697.40, 1,991,315.70 and 485,815.80 is: 728,639.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,697.40 : 1,991,315.70 = 485,815.80 : x
  2. Step 2: Convert to fraction form
    1,327,697.40/1,991,315.70 = 485,815.80/x
  3. Step 3: Cross multiply
    1,327,697.40x = 1,991,315.70 × 485,815.80
  4. Step 4: Simplify right side
    1,327,697.40x = 967,412,629,848.06
  5. Step 5: Solve for x
    x = 967,412,629,848.06/1,327,697.40
  6. Step 6: Final answer
    x = 728,639.39

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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.