Home / 1,189,149.47-1,641,017.91-645,271.41

Finding the Fourth Proportional to 1,189,149.47, 1,641,017.91 and 645,271.41

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Solution

The fourth proportional to 1,189,149.47, 1,641,017.91 and 645,271.41 is: 890,470.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,149.47 : 1,641,017.91 = 645,271.41 : x
  2. Step 2: Convert to fraction form
    1,189,149.47/1,641,017.91 = 645,271.41/x
  3. Step 3: Cross multiply
    1,189,149.47x = 1,641,017.91 × 645,271.41
  4. Step 4: Simplify right side
    1,189,149.47x = 1,058,901,940,620.95
  5. Step 5: Solve for x
    x = 1,058,901,940,620.95/1,189,149.47
  6. Step 6: Final answer
    x = 890,470.01

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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.