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Finding the Fourth Proportional to 999,764.80, 1,498,480.80 and 400,429.60

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Solution

The fourth proportional to 999,764.80, 1,498,480.80 and 400,429.60 is: 600,177.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,764.80 : 1,498,480.80 = 400,429.60 : x
  2. Step 2: Convert to fraction form
    999,764.80/1,498,480.80 = 400,429.60/x
  3. Step 3: Cross multiply
    999,764.80x = 1,498,480.80 × 400,429.60
  4. Step 4: Simplify right side
    999,764.80x = 600,036,067,351.68
  5. Step 5: Solve for x
    x = 600,036,067,351.68/999,764.80
  6. Step 6: Final answer
    x = 600,177.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.