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Finding the Fourth Proportional to 1,929,952.80, 2,894,410.80 and 807,789.60

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Solution

The fourth proportional to 1,929,952.80, 2,894,410.80 and 807,789.60 is: 1,211,467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929,952.80 : 2,894,410.80 = 807,789.60 : x
  2. Step 2: Convert to fraction form
    1,929,952.80/2,894,410.80 = 807,789.60/x
  3. Step 3: Cross multiply
    1,929,952.80x = 2,894,410.80 × 807,789.60
  4. Step 4: Simplify right side
    1,929,952.80x = 2,338,074,942,367.68
  5. Step 5: Solve for x
    x = 2,338,074,942,367.68/1,929,952.80
  6. Step 6: Final answer
    x = 1,211,467.42

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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.