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Finding the Fourth Proportional to 993,855.22, 1,489,616.43 and 520,763.38

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Solution

The fourth proportional to 993,855.22, 1,489,616.43 and 520,763.38 is: 780,533.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,855.22 : 1,489,616.43 = 520,763.38 : x
  2. Step 2: Convert to fraction form
    993,855.22/1,489,616.43 = 520,763.38/x
  3. Step 3: Cross multiply
    993,855.22x = 1,489,616.43 × 520,763.38
  4. Step 4: Simplify right side
    993,855.22x = 775,737,686,990.33
  5. Step 5: Solve for x
    x = 775,737,686,990.33/993,855.22
  6. Step 6: Final answer
    x = 780,533.90

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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.