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Finding the Fourth Proportional to 1,789,720.42, 2,469,814.53 and 984,904.42

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Solution

The fourth proportional to 1,789,720.42, 2,469,814.53 and 984,904.42 is: 1,359,168.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789,720.42 : 2,469,814.53 = 984,904.42 : x
  2. Step 2: Convert to fraction form
    1,789,720.42/2,469,814.53 = 984,904.42/x
  3. Step 3: Cross multiply
    1,789,720.42x = 2,469,814.53 × 984,904.42
  4. Step 4: Simplify right side
    1,789,720.42x = 2,432,531,247,177.22
  5. Step 5: Solve for x
    x = 2,432,531,247,177.22/1,789,720.42
  6. Step 6: Final answer
    x = 1,359,168.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.