Home / 1,189,144.80-1,641,011.49-645,266.77

Finding the Fourth Proportional to 1,189,144.80, 1,641,011.49 and 645,266.77

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Solution

The fourth proportional to 1,189,144.80, 1,641,011.49 and 645,266.77 is: 890,463.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,144.80 : 1,641,011.49 = 645,266.77 : x
  2. Step 2: Convert to fraction form
    1,189,144.80/1,641,011.49 = 645,266.77/x
  3. Step 3: Cross multiply
    1,189,144.80x = 1,641,011.49 × 645,266.77
  4. Step 4: Simplify right side
    1,189,144.80x = 1,058,890,179,582.66
  5. Step 5: Solve for x
    x = 1,058,890,179,582.66/1,189,144.80
  6. Step 6: Final answer
    x = 890,463.62

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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.