Home / 1,328,005.10-1,992,007.65-768,133.10

Finding the Fourth Proportional to 1,328,005.10, 1,992,007.65 and 768,133.10

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Solution

The fourth proportional to 1,328,005.10, 1,992,007.65 and 768,133.10 is: 1,152,199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,005.10 : 1,992,007.65 = 768,133.10 : x
  2. Step 2: Convert to fraction form
    1,328,005.10/1,992,007.65 = 768,133.10/x
  3. Step 3: Cross multiply
    1,328,005.10x = 1,992,007.65 × 768,133.10
  4. Step 4: Simplify right side
    1,328,005.10x = 1,530,127,011,418.22
  5. Step 5: Solve for x
    x = 1,530,127,011,418.22/1,328,005.10
  6. Step 6: Final answer
    x = 1,152,199.65

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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.