Home / 1,189,540.82-1,641,567.80-645,676.58

Finding the Fourth Proportional to 1,189,540.82, 1,641,567.80 and 645,676.58

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Solution

The fourth proportional to 1,189,540.82, 1,641,567.80 and 645,676.58 is: 891,034.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,540.82 : 1,641,567.80 = 645,676.58 : x
  2. Step 2: Convert to fraction form
    1,189,540.82/1,641,567.80 = 645,676.58/x
  3. Step 3: Cross multiply
    1,189,540.82x = 1,641,567.80 × 645,676.58
  4. Step 4: Simplify right side
    1,189,540.82x = 1,059,921,882,942.12
  5. Step 5: Solve for x
    x = 1,059,921,882,942.12/1,189,540.82
  6. Step 6: Final answer
    x = 891,034.48

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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.