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Finding the Fourth Proportional to 984,891, 1,359,782.15 and 617,871.34

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Solution

The fourth proportional to 984,891, 1,359,782.15 and 617,871.34 is: 853,059.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,891 : 1,359,782.15 = 617,871.34 : x
  2. Step 2: Convert to fraction form
    984,891/1,359,782.15 = 617,871.34/x
  3. Step 3: Cross multiply
    984,891x = 1,359,782.15 × 617,871.34
  4. Step 4: Simplify right side
    984,891x = 840,170,424,072.72
  5. Step 5: Solve for x
    x = 840,170,424,072.72/984,891
  6. Step 6: Final answer
    x = 853,059.30

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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.