Home / 1,329,999.80-1,992,810.90-768,054.20

Finding the Fourth Proportional to 1,329,999.80, 1,992,810.90 and 768,054.20

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Solution

The fourth proportional to 1,329,999.80, 1,992,810.90 and 768,054.20 is: 1,150,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,999.80 : 1,992,810.90 = 768,054.20 : x
  2. Step 2: Convert to fraction form
    1,329,999.80/1,992,810.90 = 768,054.20/x
  3. Step 3: Cross multiply
    1,329,999.80x = 1,992,810.90 × 768,054.20
  4. Step 4: Simplify right side
    1,329,999.80x = 1,530,586,781,550.78
  5. Step 5: Solve for x
    x = 1,530,586,781,550.78/1,329,999.80
  6. Step 6: Final answer
    x = 1,150,817.30

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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.