Home / 1,189,139.74-1,641,004.52-645,261.69

Finding the Fourth Proportional to 1,189,139.74, 1,641,004.52 and 645,261.69

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Solution

The fourth proportional to 1,189,139.74, 1,641,004.52 and 645,261.69 is: 890,456.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,139.74 : 1,641,004.52 = 645,261.69 : x
  2. Step 2: Convert to fraction form
    1,189,139.74/1,641,004.52 = 645,261.69/x
  3. Step 3: Cross multiply
    1,189,139.74x = 1,641,004.52 × 645,261.69
  4. Step 4: Simplify right side
    1,189,139.74x = 1,058,877,352,800.30
  5. Step 5: Solve for x
    x = 1,058,877,352,800.30/1,189,139.74
  6. Step 6: Final answer
    x = 890,456.62

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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.