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Finding the Fourth Proportional to 709,169.75, 978,654.26 and 454,520.94

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Solution

The fourth proportional to 709,169.75, 978,654.26 and 454,520.94 is: 627,238.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,169.75 : 978,654.26 = 454,520.94 : x
  2. Step 2: Convert to fraction form
    709,169.75/978,654.26 = 454,520.94/x
  3. Step 3: Cross multiply
    709,169.75x = 978,654.26 × 454,520.94
  4. Step 4: Simplify right side
    709,169.75x = 444,818,851,917.60
  5. Step 5: Solve for x
    x = 444,818,851,917.60/709,169.75
  6. Step 6: Final answer
    x = 627,238.90

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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.