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Finding the Fourth Proportional to 891,909, 1,337,849.94 and 618,102.60

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Solution

The fourth proportional to 891,909, 1,337,849.94 and 618,102.60 is: 927,144.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,909 : 1,337,849.94 = 618,102.60 : x
  2. Step 2: Convert to fraction form
    891,909/1,337,849.94 = 618,102.60/x
  3. Step 3: Cross multiply
    891,909x = 1,337,849.94 × 618,102.60
  4. Step 4: Simplify right side
    891,909x = 826,928,526,323.84
  5. Step 5: Solve for x
    x = 826,928,526,323.84/891,909
  6. Step 6: Final answer
    x = 927,144.50

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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.