Home / 1,189,146.11-1,641,013.31-645,268.07

Finding the Fourth Proportional to 1,189,146.11, 1,641,013.31 and 645,268.07

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Solution

The fourth proportional to 1,189,146.11, 1,641,013.31 and 645,268.07 is: 890,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,146.11 : 1,641,013.31 = 645,268.07 : x
  2. Step 2: Convert to fraction form
    1,189,146.11/1,641,013.31 = 645,268.07/x
  3. Step 3: Cross multiply
    1,189,146.11x = 1,641,013.31 × 645,268.07
  4. Step 4: Simplify right side
    1,189,146.11x = 1,058,893,497,103.72
  5. Step 5: Solve for x
    x = 1,058,893,497,103.72/1,189,146.11
  6. Step 6: Final answer
    x = 890,465.42

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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.