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Finding the Fourth Proportional to 1,985,072.79, 2,976,005.29 and 770,022.03

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Solution

The fourth proportional to 1,985,072.79, 2,976,005.29 and 770,022.03 is: 1,154,410.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,072.79 : 2,976,005.29 = 770,022.03 : x
  2. Step 2: Convert to fraction form
    1,985,072.79/2,976,005.29 = 770,022.03/x
  3. Step 3: Cross multiply
    1,985,072.79x = 2,976,005.29 × 770,022.03
  4. Step 4: Simplify right side
    1,985,072.79x = 2,291,589,645,375.30
  5. Step 5: Solve for x
    x = 2,291,589,645,375.30/1,985,072.79
  6. Step 6: Final answer
    x = 1,154,410.89

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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.