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Finding the Fourth Proportional to 3,869,000.80, 5,796,502.80 and 3,309,128.80

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Solution

The fourth proportional to 3,869,000.80, 5,796,502.80 and 3,309,128.80 is: 4,957,707.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869,000.80 : 5,796,502.80 = 3,309,128.80 : x
  2. Step 2: Convert to fraction form
    3,869,000.80/5,796,502.80 = 3,309,128.80/x
  3. Step 3: Cross multiply
    3,869,000.80x = 5,796,502.80 × 3,309,128.80
  4. Step 4: Simplify right side
    3,869,000.80x = 19,181,374,354,760.64
  5. Step 5: Solve for x
    x = 19,181,374,354,760.64/3,869,000.80
  6. Step 6: Final answer
    x = 4,957,707.52

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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.