Home / 1,116,421.20-1,675,020.60-485,787.60

Finding the Fourth Proportional to 1,116,421.20, 1,675,020.60 and 485,787.60

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Solution

The fourth proportional to 1,116,421.20, 1,675,020.60 and 485,787.60 is: 728,850.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116,421.20 : 1,675,020.60 = 485,787.60 : x
  2. Step 2: Convert to fraction form
    1,116,421.20/1,675,020.60 = 485,787.60/x
  3. Step 3: Cross multiply
    1,116,421.20x = 1,675,020.60 × 485,787.60
  4. Step 4: Simplify right side
    1,116,421.20x = 813,704,237,224.56
  5. Step 5: Solve for x
    x = 813,704,237,224.56/1,116,421.20
  6. Step 6: Final answer
    x = 728,850.58

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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.