Home / 1,189,469.90-1,641,464.30-645,605.68

Finding the Fourth Proportional to 1,189,469.90, 1,641,464.30 and 645,605.68

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Solution

The fourth proportional to 1,189,469.90, 1,641,464.30 and 645,605.68 is: 890,933.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,469.90 : 1,641,464.30 = 645,605.68 : x
  2. Step 2: Convert to fraction form
    1,189,469.90/1,641,464.30 = 645,605.68/x
  3. Step 3: Cross multiply
    1,189,469.90x = 1,641,464.30 × 645,605.68
  4. Step 4: Simplify right side
    1,189,469.90x = 1,059,738,675,597.22
  5. Step 5: Solve for x
    x = 1,059,738,675,597.22/1,189,469.90
  6. Step 6: Final answer
    x = 890,933.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.