Home / 1,329,998.80-1,992,809.40-768,053.20

Finding the Fourth Proportional to 1,329,998.80, 1,992,809.40 and 768,053.20

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Solution

The fourth proportional to 1,329,998.80, 1,992,809.40 and 768,053.20 is: 1,150,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,998.80 : 1,992,809.40 = 768,053.20 : x
  2. Step 2: Convert to fraction form
    1,329,998.80/1,992,809.40 = 768,053.20/x
  3. Step 3: Cross multiply
    1,329,998.80x = 1,992,809.40 × 768,053.20
  4. Step 4: Simplify right side
    1,329,998.80x = 1,530,583,636,660.08
  5. Step 5: Solve for x
    x = 1,530,583,636,660.08/1,329,998.80
  6. Step 6: Final answer
    x = 1,150,815.80

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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.