Home / 1,189,149.58-1,641,018.09-645,271.54

Finding the Fourth Proportional to 1,189,149.58, 1,641,018.09 and 645,271.54

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Solution

The fourth proportional to 1,189,149.58, 1,641,018.09 and 645,271.54 is: 890,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,149.58 : 1,641,018.09 = 645,271.54 : x
  2. Step 2: Convert to fraction form
    1,189,149.58/1,641,018.09 = 645,271.54/x
  3. Step 3: Cross multiply
    1,189,149.58x = 1,641,018.09 × 645,271.54
  4. Step 4: Simplify right side
    1,189,149.58x = 1,058,902,270,102.16
  5. Step 5: Solve for x
    x = 1,058,902,270,102.16/1,189,149.58
  6. Step 6: Final answer
    x = 890,470.20

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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.