Home / 1,189,402.38-1,641,376.89-645,538.19

Finding the Fourth Proportional to 1,189,402.38, 1,641,376.89 and 645,538.19

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Solution

The fourth proportional to 1,189,402.38, 1,641,376.89 and 645,538.19 is: 890,843.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,402.38 : 1,641,376.89 = 645,538.19 : x
  2. Step 2: Convert to fraction form
    1,189,402.38/1,641,376.89 = 645,538.19/x
  3. Step 3: Cross multiply
    1,189,402.38x = 1,641,376.89 × 645,538.19
  4. Step 4: Simplify right side
    1,189,402.38x = 1,059,571,458,471.54
  5. Step 5: Solve for x
    x = 1,059,571,458,471.54/1,189,402.38
  6. Step 6: Final answer
    x = 890,843.57

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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.