Home / 1,188,890,846.60-1,783,336,269.90-412,278,398.60

Finding the Fourth Proportional to 1,188,890,846.60, 1,783,336,269.90 and 412,278,398.60

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Solution

The fourth proportional to 1,188,890,846.60, 1,783,336,269.90 and 412,278,398.60 is: 618,417,597.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,890,846.60 : 1,783,336,269.90 = 412,278,398.60 : x
  2. Step 2: Convert to fraction form
    1,188,890,846.60/1,783,336,269.90 = 412,278,398.60/x
  3. Step 3: Cross multiply
    1,188,890,846.60x = 1,783,336,269.90 × 412,278,398.60
  4. Step 4: Simplify right side
    1,188,890,846.60x = 735,231,021,519,669,504
  5. Step 5: Solve for x
    x = 735,231,021,519,669,504/1,188,890,846.60
  6. Step 6: Final answer
    x = 618,417,597.90

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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.