Home / 1,189,351.91-1,641,317.90-645,492.39

Finding the Fourth Proportional to 1,189,351.91, 1,641,317.90 and 645,492.39

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Solution

The fourth proportional to 1,189,351.91, 1,641,317.90 and 645,492.39 is: 890,786.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,351.91 : 1,641,317.90 = 645,492.39 : x
  2. Step 2: Convert to fraction form
    1,189,351.91/1,641,317.90 = 645,492.39/x
  3. Step 3: Cross multiply
    1,189,351.91x = 1,641,317.90 × 645,492.39
  4. Step 4: Simplify right side
    1,189,351.91x = 1,059,458,214,020.78
  5. Step 5: Solve for x
    x = 1,059,458,214,020.78/1,189,351.91
  6. Step 6: Final answer
    x = 890,786.15

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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.