Home / 5,318,913-7,978,369.68-1,329,825

Finding the Fourth Proportional to 5,318,913, 7,978,369.68 and 1,329,825

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Solution

The fourth proportional to 5,318,913, 7,978,369.68 and 1,329,825 is: 1,994,737.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318,913 : 7,978,369.68 = 1,329,825 : x
  2. Step 2: Convert to fraction form
    5,318,913/7,978,369.68 = 1,329,825/x
  3. Step 3: Cross multiply
    5,318,913x = 7,978,369.68 × 1,329,825
  4. Step 4: Simplify right side
    5,318,913x = 10,609,835,459,706
  5. Step 5: Solve for x
    x = 10,609,835,459,706/5,318,913
  6. Step 6: Final answer
    x = 1,994,737.55

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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.