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Finding the Fourth Proportional to 1,203,679, 1,661,077.02 and 667,135

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Solution

The fourth proportional to 1,203,679, 1,661,077.02 and 667,135 is: 920,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,679 : 1,661,077.02 = 667,135 : x
  2. Step 2: Convert to fraction form
    1,203,679/1,661,077.02 = 667,135/x
  3. Step 3: Cross multiply
    1,203,679x = 1,661,077.02 × 667,135
  4. Step 4: Simplify right side
    1,203,679x = 1,108,162,617,737.70
  5. Step 5: Solve for x
    x = 1,108,162,617,737.70/1,203,679
  6. Step 6: Final answer
    x = 920,646.30

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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.