Home / 1,189,538.65-1,641,519.43-645,662.94

Finding the Fourth Proportional to 1,189,538.65, 1,641,519.43 and 645,662.94

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Solution

The fourth proportional to 1,189,538.65, 1,641,519.43 and 645,662.94 is: 890,991.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,538.65 : 1,641,519.43 = 645,662.94 : x
  2. Step 2: Convert to fraction form
    1,189,538.65/1,641,519.43 = 645,662.94/x
  3. Step 3: Cross multiply
    1,189,538.65x = 1,641,519.43 × 645,662.94
  4. Step 4: Simplify right side
    1,189,538.65x = 1,059,868,261,240.92
  5. Step 5: Solve for x
    x = 1,059,868,261,240.92/1,189,538.65
  6. Step 6: Final answer
    x = 890,991.03

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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.