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Finding the Fourth Proportional to 891,910, 1,337,851.44 and 618,103.60

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Solution

The fourth proportional to 891,910, 1,337,851.44 and 618,103.60 is: 927,146.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,910 : 1,337,851.44 = 618,103.60 : x
  2. Step 2: Convert to fraction form
    891,910/1,337,851.44 = 618,103.60/x
  3. Step 3: Cross multiply
    891,910x = 1,337,851.44 × 618,103.60
  4. Step 4: Simplify right side
    891,910x = 826,930,791,329.18
  5. Step 5: Solve for x
    x = 826,930,791,329.18/891,910
  6. Step 6: Final answer
    x = 927,146.00

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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.