Home / 1,189,149.08-1,641,017.40-645,271.04

Finding the Fourth Proportional to 1,189,149.08, 1,641,017.40 and 645,271.04

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Solution

The fourth proportional to 1,189,149.08, 1,641,017.40 and 645,271.04 is: 890,469.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,149.08 : 1,641,017.40 = 645,271.04 : x
  2. Step 2: Convert to fraction form
    1,189,149.08/1,641,017.40 = 645,271.04/x
  3. Step 3: Cross multiply
    1,189,149.08x = 1,641,017.40 × 645,271.04
  4. Step 4: Simplify right side
    1,189,149.08x = 1,058,901,004,356.10
  5. Step 5: Solve for x
    x = 1,058,901,004,356.10/1,189,149.08
  6. Step 6: Final answer
    x = 890,469.51

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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.