Home / 1,189,327.71-1,641,273.09-645,463.38

Finding the Fourth Proportional to 1,189,327.71, 1,641,273.09 and 645,463.38

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Solution

The fourth proportional to 1,189,327.71, 1,641,273.09 and 645,463.38 is: 890,739.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,327.71 : 1,641,273.09 = 645,463.38 : x
  2. Step 2: Convert to fraction form
    1,189,327.71/1,641,273.09 = 645,463.38/x
  3. Step 3: Cross multiply
    1,189,327.71x = 1,641,273.09 × 645,463.38
  4. Step 4: Simplify right side
    1,189,327.71x = 1,059,381,676,174.44
  5. Step 5: Solve for x
    x = 1,059,381,676,174.44/1,189,327.71
  6. Step 6: Final answer
    x = 890,739.93

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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.