Home / 2,645,989.20-3,968,983.80-1,318,885.20

Finding the Fourth Proportional to 2,645,989.20, 3,968,983.80 and 1,318,885.20

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Solution

The fourth proportional to 2,645,989.20, 3,968,983.80 and 1,318,885.20 is: 1,978,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645,989.20 : 3,968,983.80 = 1,318,885.20 : x
  2. Step 2: Convert to fraction form
    2,645,989.20/3,968,983.80 = 1,318,885.20/x
  3. Step 3: Cross multiply
    2,645,989.20x = 3,968,983.80 × 1,318,885.20
  4. Step 4: Simplify right side
    2,645,989.20x = 5,234,633,992,859.76
  5. Step 5: Solve for x
    x = 5,234,633,992,859.76/2,645,989.20
  6. Step 6: Final answer
    x = 1,978,327.80

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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.